Peanut

Peanut (pronounced pee-nuht)

(1) The pod or the enclosed edible seed of the plant, Arachis hypogaea, of the legume family, native to the tropical Americas (and probably of South American origin).  During the plant’s growth, the pod is forced underground where it ripens.  The edible, nut-like seed is used for food and as a source of oil (historically known variously also as the pinder, pinda and goober (used south of the Mason-Dixon Line (originally as “goober pea)), earthnut, groundnut & monkey nut (pre-World War II (1939-1945) UK use).

(2) The plant itself.

(3) Any small or insignificant person or thing; something petty.

(4) In US slang, a very small clam.

(5) In slang, barbiturates (recorded also of other substances delivered in small pills).

(6) In slang, small pieces of Styrofoam used as a packing material (known also as the “packing peanut”).

(7) Of or relating to the peanut or peanuts.

(8) Made with or from peanuts.

1790–1800: The construct may have been pea (in the sense of the small green vegetable) + nut but may etymologists think it was more likely a folk etymology of pinda or pinder, both forms still in dialectal use south of the Mason-Dixon Line.  The plant is apparently native to South America and it was Portuguese traders who early in the sixteenth century took peanuts from Brazil and Peru to Africa by 1502.  Its cultivation in Chekiang (an eastern coastal province of China) was recorded as early as 1573 and the crop probably arrived with the Portuguese ships which docked there.  According to the broadcaster Alistair Cooke (1908–2004), The spellings pea nut & pea-nut are obsolete.  Peanut is a noun & verb. Peanutted & peanutting are verbs and peanutty & peanutlike are adjectives; the noun plural is peanuts.

The word appears in many aspects of modern culture including “circus peanut” (a type of commercial candy), “cocktail peanuts” (commercially packaged salted nuts served (for free) in bars to heighten thirst and thus stimulate beverage sales (also known generically as “beer nuts”)), “peanut butter” (a spread made from ground peanuts and known also as “peanut paste”), “peanut butter and jelly” (a sandwich made with jelly (jam or conserve) spread on one slice and peanut butter on the other), “small peanuts” (very small amount (always in the plural), “peanut milk” (a milky liquid made from peanuts and used as a milk substitute), peanut brittle (a type of brittle (confection) containing peanuts in a hard toffee), “peanut butter cup” (a chocolate candy with peanut butter filling), “peanut bunker” (a small menhaden (a species of fish)), “hog peanut” (a plant native to eastern North America that produces edible nut-like seeds both above & below ground (Amphicarpaea bracteata)), “peanut worm” ( sipunculid worm; any member of phylum Sipuncula. (Sipuncula spp), “peanut cactus” (a cactus of species Chamaecereus silvestrii), “peanut ball” (in athletics & strength training, an exercise ball comprised of two bulbous lobes and a narrower connecting portion), “peanut marzipan” (a peanut confection made with crushed peanuts & sugar, popular in Central & South America), “peanut whistle” (in the slang of the ham radio and citizens band (CB) radio communities, a low-powered transmitter or receiver, “peanut tree” (A tree of the species Sterculia quadrifida), “peanut-headed lanternfly” (In entomology, a species of Neotropical fulgorid planthopper (Fulgora laternaria)) and peanut tube (in electronics, a type of small vacuum tube).

Herbert (HW) Horwill’s (1864-1943) A Dictionary of Modern American Usage (1935) was written as kind of trans-Atlantic companion to Henry Fowler’s (1858–1933) classic A Dictionary of Modern English Usage (1926) and was one of the earliest volumes to document on a systematic basis the variations and dictions between British and American English.  The book was a kind of discussion about the phrase “England and America are two countries separated by one language” attributed to George Bernard Shaw (GBS; 1856-1950) although there are doubts about that.  Horwill had an entry for “peanut” which he noted in 1935 was common in the US but unknown in the UK where it was known as the “monkey nut”.  According to the broadcaster Alistair Cooke (1908–2004), the world “peanut” became a thing in the UK during the early 1940s when the US government included generous quantities of the then novel peanut butter in the supplies of foodstuffs included in the Lend-Lease arrangements.

In idiomatic use, the phrase “if you pay peanuts, you get monkeys” is used to suggest that if only low wages are offered for a role, high quality applicants are unlike to be attracted to the position.  The phrase “peanut gallery” is one of a number which have enter the language from the theatre.  The original Drury Lane theatre in London where William Shakespeare’s (1564–1616) were staged was built on the site of a notorious cockpit (the place where gamecocks fought, spectators gambling on the outcome) and even before this bear and bull-baiting pits had been used for theatrical production of not the highest quality.  That’s the origin of the “pit” in this context being the space at the rear of the orchestra circle, the pit sitting behind the more desirable stalls.  By the Elizabethan era (1558-1603), the poor often sat on the ground (under an open sky) while the more distant raised gallery behind them contained the seats which were cheaper still; that’s the origin of the phrase “playing to the gallery” which describes an appeal to those with base, uncritical tastes although “gallery god” (an allusion to the paintings of the gods of antiquity which were on the gallery’s wall close to the ceiling) seems to be extinct.  The “peanut gallery” (the topmost (ie the most distant and thus cheapest) rows of a theatre) was a coining in US English dating from 1874 because it was the habit of the audience to cast upon to the stage the shells of the peanuts they’d been eating although whether this was ad-hoc criticism or general delinquency isn’t known.  The companion phrase was “hush money”, small denomination coins tossed onto the stage as a “payment” to silence an actor whose performance was judged substandard.  “Hush money” of course has endured to be re-purposed, now used of the payments such as the one made by Donald Trump (b 1946; US president 2017-2021; president elect 2024) to Stormy Daniels (stage name of Stephanie Gregory, b 1979).

Chairman Mao Zedong (left) and Generalissimo Chiang Kai-shek (right), celebrating the Japanese surrender, Chongqing, China, September 1945.  After this visit, they would never meet again.

Joseph "Vinegar Joe" Stilwell (1883–1946) was a US Army general who was appointed chief of staff to the Chinese Nationalist Leader, Generalissimo Chiang Kai-shek (1887-1975) (Generalissimo was a kind of courtesy title acknowledging his position as supreme leader of his armed forces; officially his appointment in 1935 was as 特級上將 (Tèjí shàng jiàng) (high general special class)).  Stilwell’s role was to attempt to coordinate the provision of US funds and materiel to Chiang with the objectives of having the Chinese Nationalist forces operate against the Imperial Japanese Army in Burma (now known usually as Myanmar).  Unfortunately, the generalissimo viewed the Chinese communists under Chairman Mao (Mao Zedong 1893–1976; chairman of the Chinese Communist Party (CCP) 1949-1976) as a more immediate threat than that of Nippon and his support for US strategy was no always wholehearted. 

So Stilwell didn’t have an easy task and in his reports to Washington DC referred to Chiang as “Peanut”.  Apparently, “peanut” had originally been allocated to Chiang as one of the army’s random code-names with no particular meaning but greatly it appealed to Stillwell who warmed to the metaphorical possibilities, once recorded referring to Chiang and his creaking military apparatus as “...a peanut perched on top of a dung heap...”  That about summed up Stillwell’s view of Chiang and his “army” and in his diary he noted a military crisis “would be worth it” were the situation “…just sufficient to get rid of the Peanut without entirely wrecking the ship…”  A practical man, his plans extended even to assassinating the generalissimo although these were never brought to fruition.  Eventually, Stilwell was recalled to Washington while Chiang fought on against the communists until 1949 when the Nationalists were forced to flee across the straits of Formosa to the Island of Taiwan, the “renegade province” defying the CCP in Beijing to this day.  Stillwell did have one final satisfaction before being sacked, in 1944 handing Chiang an especially wounding letter from Franklin Delano Roosevelt (FDR, 1882–1945, US president 1933-1945), the reaction so pleasing he was moved to write a poem:

I have waited long for vengeance,
At last I've had my chance.
I've looked the Peanut in the eye
And kicked him in the pants.
 
The old harpoon was ready
With aim and timing true,
I sank it to the handle,
And stung him through and through.
 
The little bastard shivered,
And lost the power of speech.
His face turned green and quivered
As he struggled not to screech.
 
For all my weary battles,
For all my hours of woe,
At last I've had my innings
And laid the Peanut low.
 
I know I've still to suffer,
And run a weary race,
But oh! the blessed pleasure!
I've wrecked the Peanut's face.

Phobias

One who suffers a morbid fear of peanut butter sticking to the roof of one's mouth is said to be an arachibutyrophobe.  Phobias need not be widely diagnosed conditions; they need only be specific and, even if suffered by just one soul in the world, the criteria are fulfilled.  In this sense, phobias are analogous with syndromes.  A phobia is an anxiety disorder, an unreasonable or irrational fear related to exposure to certain objects or situations.  The phobia may be triggered either by the cause or an anticipation of the specific object or situation.

Lindsay Lohan in The Parent Trap (1998) introduced the culinary novelty of peanut butter spread on Oreos; an allure appalled arachibutyrophobes avoid.

The fifth edition of the American Psychiatric Association's (APA) Diagnostic and Statistical Manual of Mental Disorders (DSM-5 (2013)) made some interesting definitional changes from the earlier DSM-4 (1994):  (1) A patient no longer needs to acknowledge their anxiety is excessive or unreasonable in order to receive a diagnoses, it being required only that their anxiety must be “out of proportion” to the actual threat or danger (in its socio-cultural context).  (2) Symptoms must now, regardless of age, last at least six months.  (3) The diagnostic criteria for social phobias no longer specify that age at onset must be before eighteen, a change apparently necessitated by the substantial increase in reporting by older adults with the DSM editors noting the six-month duration threshold exists to minimize the over-diagnosis of transient fears.

Whether it was already something widely practiced isn’t known but Lindsay Lohan is credited with introducing to the world the culinary novelty Oreos & peanut butter in The Parent Trap.  According to the director, it was added to the script “…for no reason other than it sounded weird and some cute kid would do it."  Like some other weirdnesses, the combination has a cult following and for those who enjoy peanut butter but suffer arachibutyrophobia, Tastemade have provided a recipe for Lindsay Lohan-style Oreos with a preparation time (including whisking) of 2 hours.  They take 20 minutes to cook and in this mix there are 8 servings (scale ingredients up to increase the number of servings).

Ingredients

2 cups flour
1 cup unsweetened cocoa powder (plus more for dusting)
¾ teaspoon kosher salt
1 ¼ cups unsalted butter (at room temperature)
¾ cup sugar
1 teaspoon vanilla extract
Powdered sugar, for dusting

Filling Ingredients

½ cup unsalted butter, at room temperature
¼ cup unsweetened smooth peanut butter
1 ½ cups powdered sugar
1 teaspoon vanilla extract
A pinch of kosher salt (omit if using salted peanut butter)

Filling Instructions

(1) With a stand mixer fitted with a paddle attachment, the butter & peanut butter until creamy.

(2) Gradually add powdered sugar and beat to combine, then beat in vanilla and salt.

Whisking the mix.

Instructions

(1) Preheat the oven to 325°F (160°C). Line two baking sheets with parchment paper.

(2) In small bowl, whisk together flour, cocoa powder & salt.

(3) In a stand mixer fitted with a paddle attachment, cream together the butter and sugar until light and fluffy.  Mix in the vanilla extract. With the mixer running on low speed, add the flour mixture and beat until just combined (it should remain somewhat crumbly).

(4) Pour mixture onto a work surface and knead until it’s “all together”; wrap half in plastic wrap and place in refrigerator.

(5) Lightly dust surface and the top of the dough with a 1:1 mixture of cocoa powder and powdered sugar.

(6) Working swiftly and carefully, roll out dough to a ¼-½ inch (6-12 mm) thickness and cut out 2 inch (50 mm) rounds.  Transfer them to the baking sheets, 1 inch (25 mm) apart (using a small offset spatula helps with this step). Re-roll scraps and cut out more rounds, the repeat with remaining half of the dough.

(7) Bake cookies until the tops are no longer shiny ( about 20 minutes), then cool on pan for 5 minutes before transferring to wire rack completely to cool.

(8) To assemble, place half the cookies on a plate or work surface.

(9) Pipe a blob of filling (about 2 teaspoons) onto the tops of each of these cookies and then place another cookie on top, pressing slightly but not to the extent filled oozes from the sides.

(10) Refrigerate for a few minutes to allow the filling to firm up.  Store in an air-tight container in refrigerator.

The manufacturer embraced the idea of peanut butter Oreos and has released versions, both with the classic cookie and a peanut butter & jelly (jam) variation paired with its “golden wafers”.  As well as Lindsay Lohan’s contribution, Oreos have attracted the interest of mathematicians.  Nabisco in 1974 introduced the Double Stuf Oreo, the clear implication being a promise the variety contained twice crème filling supplied in the original.  However, a mathematician undertook the research and determined Double Stuf Oreos contained only 1.86 times the volume of filling of a standard Oreo.  Despite that, the company survived the scandal and the Double Stuf Oreo’s recipe wasn’t adjusted.

Scandalous in its own way was that an April 2022 research paper published in the journal Physics of Fluids wasn’t awarded that year’s Ig Nobel Prize for physics, the honor taken by Frank Fish, Zhi-Ming Yuan, Minglu Chen, Laibing Jia, Chunyan Ji & Atilla Incecik, for their admittedly ground-breaking (or perhaps water-breaking) work in explaining how ducklings manage to swim in formation.  More deserving surely were Crystal Owens, Max Fan, John Hart & Gareth McKinley who introduced to physics the discipline of Oreology (the construct being Oreo + (o)logy).  The suffix -ology was formed from -o- (as an interconsonantal vowel) +‎ -logy.  The origin in English of the -logy suffix lies with loanwords from the Ancient Greek, usually via Latin and French, where the suffix (-λογία) is an integral part of the word loaned (eg astrology from astrologia) since the sixteenth century.  French picked up -logie from the Latin -logia, from the Ancient Greek -λογία (-logía).  Within Greek, the suffix is an -ία (-ía) abstract from λόγος (lógos) (account, explanation, narrative), and that a verbal noun from λέγω (légō) (I say, speak, converse, tell a story).  In English the suffix became extraordinarily productive, used notably to form names of sciences or disciplines of study, analogous to the names traditionally borrowed from the Latin (eg astrology from astrologia; geology from geologia) and by the late eighteenth century, the practice (despite the disapproval of the pedants) extended to terms with no connection to Greek or Latin such as those building on French or German bases (eg insectology (1766) after the French insectologie; terminology (1801) after the German Terminologie).  Within a few decades of the intrusion of modern languages, combinations emerged using English terms (eg undergroundology (1820); hatology (1837)).  In this evolution, the development may be though similar to the latter-day proliferation of “-isms” (fascism; feminism et al).  Oreology is the study of the flow and fracture of sandwich cookies and the research proved it is impossible to split the cream filling of an Oreo cookie down the middle.

An Oreo on a rheometer.

The core finding in Oreology was that the filling always adheres to one side of the wafer, no matter how quickly one or both cookies are twisted.  Using a rheometer (a laboratory instrument used to measure the way in which a viscous fluid (a liquid, suspension or slurry) flows in response to applied forces), it was determined creme distribution upon cookie separation by torsional rotation is not a function of rate of rotation, creme filling height level, or flavor, but was mostly determined by the pre-existing level of adhesion between the creme and each wafer.  The research also noted that were there changes to the composition of the filling (such as the inclusion of peanut butter) would influence the change from adhesive to cohesive failure and presumably the specifics of the peanut butter chosen (smooth, crunchy, extra-crunchy, un-salted (although the organic varieties should behave in a similar way to their mass-market equivalents)) would have some effect because the fluid dynamics would change.  The expected extent of the change would be appear to be slight but until further research is performed, this can’t be confirmed.

Tarmacadam

Tarmacadam (pronounced tahr-muh-kad-uhm)

(1) A paving material consisting of coarse crushed stone covered with a mixture of tar and bitumen.

(2) To cover or surface with tarmacadam.

1880–1885: The construct was tar + macadam (the spelling tar-macadam was also used).  Tar was from the Middle English ter, terr & tarr, from the Old English teoru, from the Proto-West Germanic teru, from the Proto-Germanic terwą (related to the Saterland Frisian Taar, the West Frisian tarre & tar, the Dutch teer & German Teer), from the primitive Indo-European derwo- (related to the Welsh derw (oaks), the Lithuanian dervà (pinewood, resin), the Russian де́рево (dérevo) (tree) and the Bulgarian дърво́ (dǎrvó) (tree)), from dóru (tree).  Tar described the black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal and it has been in use for millennia including as a water-proofing agent in the warships of Antiquity where it worked well but, being flammable, increased the vessels vulnerability to attack by “fire-ships”, an early “high-tech” weapon.  It’s used also as a descriptor of the solid residual by-product of tobacco smoke, seen often in anti-smoking campaigns, often demonstrating the effect on the lungs.  The old slang of a “tar” (also “jack tar”) being a sailor was unrelated to the hydrocarbon derivative and was a clipping of “tarpaulin”, allusion to the clothing seafarers wore.  In drug user slang, “black tar” was a form of heroin.  Tarmacadam is a noun & verb, and tarmacadaming & tarmacadamed are verbs; the noun plural is tarmcadams.

A Clan MacAdam family crest (there are many MacAdam crests and coats of arms).

The origin of the prefixes “Mc” & “Mac” in Scottish surnames lie in the Gaelic language historically was spoken in Scotland and both “son of”, thus indicating lineage, specifically to signify “son of” a particular person or ancestor (a la Robinson, Johnson et al).  Over centuries, the original “Mac” prefix was sometimes shortened to “Mc” but both forms are used interchangeable, carrying the same meaning.  The prefixes were an example of Celtic naming traditions (obviously most prevalent in Scotland & Ireland but also in other Gaelic-speaking regions) where surnames often were patronymic, based on the name of a father or ancestor.  Family lineage and heritage are important aspects in the naming traditions and conventions in many cultures and the “Mac” & Mc” use was the Gaelic practice.  The surname McAdam (also as MacAdam, Macadam & Mac Adaim (Irish)) belonged to a Scottish Gaelic clan which originated as a branch of Clan Gregor and although it has spread to many nations of the old British Empire (notably Ireland, the US, New Zealand, Australia and Canada), it is most prominent in the Galloway and Ayrshire regions of Scotland.

Clan MacAdam tartans: Reproduction (left), Modern (centre) and Ancient (right).  There are many Clan MacAdam tartans and the provenance of some may be dubious.  

The Gaelic “son of Adam” existed in those cases where the Biblical name had not been Gaelicized.  In this sense it was a companion of McGaw & MacGaw (from a Gaelicized form of the personal name) which in Ireland evolved as McCadden (in County Armagh) and McCaw (in County Cavan).  The Gaelic original seems to have been MacAdaim, introduced into both England and Scotland by twelfth century crusaders returning from the various (and usually unsuccessful) expeditions to “free” the Holy Land from Islamic control; Among the warrior crusaders, it was a fashion to give their children biblical names and because of the patronymic convention, they became elements in surnames from the thirteenth century onwards, MacAdam & McAdam proliferating.  So, given the etymology, it would be reasonable to assume tarmacadam might be pronounced tahr-mick-adam but even by the turn of the twentieth century it had become a stand-alone English word pronounced tahr-muh-kad-uhm.  

Tarmacadaming in progress (the worker on the right wielding a “tarmac rake”).  Like an iceberg, much of what a road is lies beneath. 

John McAdam (1756- 1836) was a Scottish civil engineer who specialized in road-building who in 1824 invented a process he called “macadamisation”.  His innovation was a system which enabled roads to be built with a smooth hard surface, using a defined mix of materials consisting particle of mixed sizes and predetermined structure; it offered the advantage of a surface which was more durable and less muddy than soil-based tracks.  Except when subjected to sustained periods of extreme weather, a characteristic of a “macadamed” surface was that vehicular transport tended to “compact and preserve” the integrity of the structure rather than wear and contribute to its deterioration.  However, as early as 1834 others began experimenting with tar (essentially as a sealant or sort of glue) as a way of strengthening a macadam road, increasing its durability, some of these enchantments involving both a top and underlying layer of tar and others adding to the surface alone.  Tar-augmented macadam was in use by the late nineteenth century but it never became widespread until the demands imposed by increasingly fast and heavy motorized vehicles.  John McAdam personally was never an advocate of the use of tar in road-building, his concern that there existed a tendency for such methods to “trap” water which would expand in sub-zero temperatures, causing the surface to break up; for this reason he preferred a structure which “breathed”, allowing the slight slope he engineered into his projects to permit natural drainage.

PavingExpert.com has a fine page explaining the terminology.

It was the Welsh civil engineer Edgar Hooley who in 1901 “invented” tarmacadam although “discovered” is a better description of what happened because the circumstances were serendipitous.  Mr Hooley was walking towards an ironworks when he observed an unusually smooth stretch of road and when he enquired what had caused the phenomenon, he was told a large barrel of tar had fallen onto the road and smashed, disgorging the contents which quickly spread, making a black, stick, mess.  Staff from the ironworks had been dispatched with a cart of slag (a waste-product from the blast furnaces with instructions to spread it across the road and Mr Hooley noted the impromptu resurfacing had solidified the road, giving it a marvelously smooth, consistent surface with no rutting and no dust.

Prototype William C Oastler steamroller, Cooke Locomotive factory, Paterson, New Jersey, 1899.

Within months, Mr Hooley had completed his design for a process he called “tarmac”.  This involved mechanically mixing tar and aggregate into a dispensing device which “laid-it-down” to be compacted with a steam-engine powered roller (the appropriately named “steamroller”).  What made the process possible was the basic tar being modified with the addition of pitch, cement & resin.  In 1902, Mr Hooley was granted a patent and the essence of his design remains in use today.  It produced good results but it was a more expensive method than the traditional approach but what radically reduced the cost was the emergence in the US of a large-scale petroleum industry which produced large quantities of bitumen as a by-product, something for which there was then little demand.  The sudden availability of vast quantities of bitumen meant coal tar could be replaced and Mr Hooley’s mechanized process then became a cheaper method of road building, the combination of the dispensing device and steamroller eliminating much of the labor-intensive activities inherent in the business of macadamisation; the most familiar modern version of the process in the “tar and chip” method which civil engineers refer to as BST (bituminous surface treatment).

Tarmacadam variations.

The classic tarmac surface is now rarely used although in a curious linguistic quirk, the word persists as a common term describing the apron outside airport passenger terminals (the “marshalling area” where aircraft are parked to allow passengers to embark & disembark (de-plane the current buzz phrase)) although these are now typically constructed with concrete.  In some markets “asphalt concrete” (the smooth, black surface sometimes called “road carpet”) but the word “tarmacadam” remains commonly used in road-building and other fields in civil engineering.  Technically, Tarmacadam should now correctly be referred to as “bituminous macadam” (“Bitmac” in professional slang) and it’s one of those processes which is appropriate for some jobs and not others, largely because while a relatively cheap method when used at large scale, for small areas it can be very expensive because the machinery is all designed to be deployed at scale.

On the tarmac: Lindsay Lohan in costume for Liz & Dick (2012), Van Nuys Airport, Los Angeles, June 2012.  Based on this image, the Van Nuys tarmac is of concrete construction.

Capsule

Capsule (pronounced kap-suhl (U), kap-sool (non-U) or kap-syool (non U))

(1) In pharmacology, a gelatinous case enclosing a dose of medicine.

(2) In biology and anatomy, a membranous sac or integument; a cartilaginous, fibrous, or membranous envelope surrounding any of certain organs or parts, especially (1) the broad band of white fibres (internal capsule) near the thalamus in each cerebral hemisphere and (2) the membrane surrounding the eyeball.

(3) Either of two strata of white matter in the cerebrum.

(4) The sporangium of various spore-producing organisms, as ferns, mosses, algae, and fungi.

(5) In botany, a dry dehiscent (one that that liberates its seeds by splitting, as in the violet, or through pores, as in the poppy) fruit, composed of two or more carpels.

(6) A small case, envelope, or covering.

(7) In aerospace, a sealed cabin, container, or vehicle in which a person or animal can ride in flight in space or at very high altitudes within the earth's atmosphere (also called space-capsule).

(8) In aviation, a similar cabin in a military aircraft, which can be ejected from the aircraft in an emergency, complete with crew and instruments etc; an outgrowth of the original escape device, the ejector-seat.  The concept is used also by some sea-going vessels and structures such as oil-rigs where they’re essentially enclosed life-boats equipped for extended duration life-support.

(9) A thin cap or seal (made historically from lead or tin but now usually of plastic), covering for the mouth of a corked (ie sealed with some sort of stopper) bottle.

(10) A concise report; brief outline.

(11) To furnish with or enclose in or as if in a capsule; to encapsulate; to capsulize.

(12) In bacteriology, a gelatinous layer of polysaccharide or protein surrounding the cell wall of some bacteria and thought to be responsible for the virulence in pathogens.  The outer layer of viscous polysaccharide or polypeptide slime of the capsules with which some bacteria cover their cell walls is thought to provide defense against phagocytes and prevent the bacteria from drying out.

(13) In the fashion industry (as a modifier), a sub-set of a collection containing the most important or representative items (a capsule-collection).

(14) In chemistry, a small clay saucer for roasting or melting samples of ores etc, known also as a scorifier (archaic); A small, shallow evaporating dish, usually of porcelain.

(15) In ballistics, a small cup or shell, often of metal, for a percussion cap, cartridge etc.

1645–1655: From the Middle English capsula (small case, natural or artificial), from the French capsula (a membranous sac) or directly from the Latin capsula (small box or chest), the construct being caps(a) (box; chest; case) + -ula (the diminutive suffix).  The medicinal sense is 1875, the origin of the shortened form being that in 1942 adopted by British army quartermasters in their inventory and supply lists (eg Cap, ASA, 5 Gr (ie a 5 grain capsule of aspirin)).  The use to describe the part of a spacecraft containing the crew is from 1954, thought influenced by the number of military personnel involved during the industry’s early years, the sense from the jargon of ballistics meaning "shell of a metallic cartridge" dating from 1864 (although the word in this context had earlier been used in science fiction (SciFi or SF)).  Capsule has been applied as an adjective since 1938.  The verb encapsulate (enclose in a capsule) is from 1842 and was in figurative use by 1939 whereas the noun encapsulation didn’t appear until 1859 but was a figurative form as early as 1934.  Capsule is a noun & verb, capsuler, capsulization & encapsulation are nouns, encapsule, capsulizing, encapsulated & encapsulating are verbs, capsulated and capsuliferous & capsuligenous are adjectives; the noun plural is capsules.  In medicine, the adjective capsuloligamentous is used in anatomical science to mean "relating to a capsule and a ligament".

Science (especially zoology, botany, medicine & anatomy) has found many uses for capsule (because in nature capsule-like formations occur with such frequency) as a descriptor including the nouns capsulotomy (incision into a capsule, especially into the lens of the eye when removing cataracts), (the generation and development of a capsule), capsulorhexis (the removal of the lens capsule during cataract surgery) & capsulectomy (the removal of a capsule, especially one that surrounds an implant) and the adjective capsuloligamentous (of or relating to a capsule and a ligament).  Science also applied modifiers as required, thus forms such as intercapsule, pseudocapsule, microcapsule, macrosapsule & subsapsule.  Industry found a use: the noun capsuler describing "a machine for applying the capsule to the cork of a wine bottle" and the first "space capsules" (the part of spaceships with the life-support systems able to sustain life and thus used as the crew compartment) appeared in SF long before any were built or launched.  The derived forms most frequently used are encapsulate and its variations encapsulation and encapulated.  

The Capsule in Asymmetric Engineering

Focke-Wulf Fw 189 Eurl (Owl).

Unusual but far from unique in its structural asymmetry, and offset crew-capsule, the Blohm & Voss BV 141 was tactical reconnaissance aircraft built in small numbers and used in a desultory manner by the Luftwaffe during WWII.  A specification issued in 1937 by the Reichsluftfahrtministerium (RLM; the German Air Ministry) had called for a single-engine reconnaissance aircraft, optimized for visual observation and, in response, Focke-Wulf responded with their Fw 189 Eurl (Owl) which, because of the twin-engined, twin-boomed layout encountered some resistance from the RLM bureaucrats but it found much favor with the Luftwaffe and, over the course of the war, some nine-hundred entered service and it was used almost exclusively as the German's standard battlefield reconnaissance aircraft.  In fact, so successful did it prove in this role that the other configurations it was designed to accommodate, that of liaison and close-support ground-attack, were never pursued.  Although its performance was modest, it was a fine airframe with superb flying qualities and an ability to absorb punishment which, on the Russian front where it was extensively deployed, became famous and captured exampled provide Russian aeronautical engineers with ides which would for years influence their designs.

Arado Ar 198.

The RLM had also invited Arado to tender but their Ar 198, although featuring an unusual under-slung and elongated cupola which afforded for the observer a uniquely panoramic view, proved unsatisfactory in test-flights and development ceased.  Blohm and Voss hadn't been included in the RLM's invitation but anyway chose to offer a design which was radically different even by the standards of the innovative Fw 189.  The asymmetric BV 141 design was intriguing with the crew housed in an extensively glazed capsule, offset to starboard of the centre-line with a boom, offset to the left, housing the single-engine in front and tail to the rear.  Prototypes were built as early as 1938 and the Luftwaffe conducted were operational trials over both the UK and USSR between 1939-1941 but, despite being satisfactory in most respects, the Bv 141 was hampered by poor performance, a consequence of using an under-powered engined.  A re-design of the structure to accommodate more powerful units was begun but delays in development and the urgent need for the up-rated engines for machines already in production doomed the project and the Bv 141 was in 1943 abandoned.

Blohm & Voss BV 141 prototype.

Blohm & Voss BV 141.

Despite the ungainly appearance, the test-pilots reported the Fw 141 was a nicely balanced airframe, the seemingly strange weight distribution well compensated by (1) component placement, (2) the specific lift characteristics of the wing design and (3) the choice of rotational direction of both crankshaft and propeller, the torque generated used as a counter-balance.  Nor, despite the expectation of some, were there difficulties in handling whatever behavior was induced by the thrust versus drag asymmetry and pilots all indicated some intuitive trimming was all that was needed to compensate for any induced yaw.  The asymmetry extended even to the tail-plane, the starboard elevator and horizontal stabilizer removed (to afford the tail-gunner a wider field of fire) after the first three prototypes were built; surprisingly, this was said barely to affect the flying characteristics.  Focke-Wolf pursued the concept, a number of design-studies (including a piston & turbojet-engine hybrid) initiated but none progressed beyond the drawing-board.

Lindsay Lohan's promotion of Los Angeles-based Civil Clothing's capsule collection, November 2014.  The pieces were an ensemble in black & white, named "My Addiction".

The capsule on the circuits

Bisiluro Damolnar, Le Mans, 1955.

The concept of the asymmetric capsule made little impact in aviation but it certain made an impression on “Smokey” Yunick (Henry Yunick 1923–2001).  Smokey Yunick was American mechanic and self-taught designer who was for years one of the most innovative and imaginative builders in motorsport.  A dominant force in the early years of NASCAR where his team won two championships and dozens of races, he continued his involvement there and in other arenas for over two decades including the Indianapolis 500, his car winning the 1960 event.  During WWII, Yunick had piloted a Boeing B-17 Flying Fortress for the 97th Bombardment Group (Heavy), flying some fifty missions out of Amendola Field, Italy and on one run, he’d had seen in the skies over Germany a Blohm & Voss BV 141 and was intrigued by the outrigger capsule in which sat the crew, immediately trying to imagine how such a layout would affect the flying characteristics.  The image of the strange aircraft stayed with him and a decade later he noted the Bisiluro Damolnar which ran at Le Mans in 1955, the year of the horrific accident in which eighty-four died.  He must have been encouraged by the impressive pace of the Bisiluro Damolnar rather than its high-speed stability (it was blown (literally) of the track by a passing Jaguar D-Type) and to contest the 1964 Indianapolis 500, he created a capsule-car.

Hurst Floor Shifter Special, Indianapolis, 1964.

Like many of the machines Yunick built, the capsule-car was designed with the rule-book in one hand and a bucket of the sponsor’s money in the other, Hurst Corporation in 1964 paying US$40,000 (equal to circa US$335,000 in 2021) for the naming rights.  Taking advantage of the USAC’s (the Indianapolis 500’s sanctioning body) rules which permitted the cars to carry as much as 75 gallons (284 litres) of fuel, some did, the placement of the tanks being an important factor in the carefully calculated weight-distribution.  The drawback of a heavy fuel load was greater weight which, early on, decreased speed and increased tyre wear but did offer the lure of less time spent re-fueling so what Yunick did was take a novel approach to the "fuel as ballast" principle which balanced the mass by placing the driver and fuel towards the front and the engine to the rear, the desired leftward bias (the Indianapolis 500 being run anti-clockwise) achieved by specific placement.  His great innovation was that using a separate, left-side capsule for the driver, he created three different weight masses (front, rear and left-centre) which, in theory, would both improve aerodynamic efficiency and optimize weight distribution.

Hurst Floor Shifter Special, Indianapolis, 1964.

Despite the appearance, the capsule-car was more conventional than intended.  The initial plan had been to use a turbine engine (as Lotus later would, almost successfully) and a single throttle/brake control but, for various reasons, it ended up using the ubiquitous Offenhauser power-plant and a conventional, two-pedal setup.  Upon arrival at the track, it made quite an impression and many understood the theories which had inspired the design.  Expectations were high.  Unfortunately, the theories didn’t work in practice and the car struggled to reach competitive speeds, an attempt at a qualifying lap delayed until the last available day.  Going into turn one at speed, a problem with the troublesome brakes caused a loss of control and the car hit the wall, the damage severe enough to preclude any chance of repairs being made in time for the race.

Hurst Floor Shifter Special, Indianapolis, 1964.

Yunick wasn’t discouraged and remained confident a year was enough time to develop the concept and solve the problem the shakedown on the circuit had revealed but the capsule-car would never race again, rule changes imposed after a horrific crash which happened early in 1964 race meaning it would have been impossible for it to conform yet remain competitive.  Effectively rendered illegal, the capsule-car was handed to the Indianapolis Motor Speedway Museum, where it's sometimes displayed.

Japanese Hotels: The Pod and the Capsule

The term "capsule hotel" is a calque of the Japanese カプセルホテル (kapuseru hoteru).  The capsule hotel is a hotel with very small accommodation units which certainly can’t be called “rooms” in any conventiona sense of the word although the property management software (PMS) the operators use to manage the places is essentially the same (though simplified because there’s no need to handle things such as mini-bars, rollaway beds et al).  Although not exclusive to Japan, it’s Japanese cities with which the concept is most associated, the first opened in Osaka in 1979 and they were an obvious place for the idea to emerge because of the high cost of real estate.  Although the market has softened since the “property bubble” which in 1989 peaked with Tokyo commercial space alone reputedly (at least as extrapolated by the theorists) worth more than the continental United States, the cost per m² remains high by international standards.  Because one typical hotel room can absorb as many m³ as a dozen or more capsules, the optimized space efficiency made the economic model compelling, even as a niche market.

Anna in Capsule 620.

Many use the terms “pod hotel” (pod used here in the individual and not the collective sense) & “capsule hotel” interchangeably to describe accommodation units which compact sleeping spaces with minimal additional facilities but in Japan the industry does note there are nuances of difference between the two.  Both are similar in that structurally the design is one of an array of small, pod-like sleeping units stacked side by side and/or atop each other in a communal space.  In a capsule hotel, the amenities are limited usually to a bed, small television and usually some (limited) provision of personal storage space with bathroom facilities shared and located in the communal area.  The target market traditionally has been budget travellers (the business as well as the leisure market) but there was for a while the phenomenon of those booking a night or two just to post the images as something exotic on Instagram and other platforms.  Interestingly, "female only" capsule hotels are a thing which must be indicative of something. 

Entrance to the world of your capsule, 9h nine hours Suidobashi, Tokyo.

The “Pod Hotel” came later and tended to be (slightly) larger, some 10-20% more expensive and positioned deliberately as “upmarket”, obviously a relative term and best thought of as vaguely analogous with the “premium economy” seats offered by airlines.  Compared with a capsule, a pod might have adjustable lighting, a built-in entertainment system supporting BYD (bring your own device) and somewhat more opulent bedding.  Demand clearly existed and a few pod hotels emerged with even a private bathroom and additional storage space although the sleeping area tended to remain the same.  It’s part of Japanese urban folklore that these more self-contained pods are often used by the famous “salarymen” who find them an attractive alternative to finding their way home after an evening of karaoke, strong drink, the attention of hostesses and such.  That aspect of the salaryman lifestyle predated the 1980s and capsules and pods were just a more economic way of doing things.  Not however predicted in a country which had since the mid-1950s become accustomed to prosperity, full-employment and growth were the recessions and consequent increase in unemployment which became part of the economy after the bubble burst in 1990.  In this environment, the capsules and especially the pods became low-cost alternative accommodation for the under-employed & unemployed and while estimates vary according to the city and district, it may be that at times as many as 20% of the units were rented on a weekly or monthly basis by those for whom the cost of a house or apartment had become prohibitive.