Deglutition

Deglutition (pronounced dee-gloo-tish-uh)

In physiology, the act or process of swallowing, regarded in modern mdeicine as a three-part process.

1640-1650: From the sixteenth century French déglutition (act or power of swallowing) or the Late Latin dēglūtītiō, the construct the Classical Latin dēglūtīre & dēgluttīre + -tiō (the suffix forming nouns relating to actions or the results of actions).  Dēgluttīre was from dēgluttiō (to swallow down), the construct being dē- (the prefix meaning “from, off”) + gluttiō (to gulp down, swallow) from the primitive Indo-European gwel (throat).  The Classical Latin deglutitionem (nominative deglutitio) was a noun of action from the past-participle stem of deglutare (to swallow down), the construct being ," from de- (the prefix used here in the sense of "down" + glutire "to swallow".  The old synonym glutition is obsolete although in medical texts it persisted well into the twentieth century and the French spelling déglutition appears in some medical publications.  Deglutition is a noun, deglutitive, deglutitious, deglutitory & deglutible are adjectives; the noun plural is deglutitions.  It seems forms like deglutiting, deglutited, deglutitively et al don't exist.

The mechanism of deglutition.

The process of deglutition (swallowing) may in humans begin to develop in utero as early as 15 weeks gestation and the conventional wisdom now is that it happens in three stages: (1) Oral Phase, in which there’s a preparatory stage, liquids sealed in the oral cavity by the tongue & hard palate bolus (the mass of something, especially of chewed food in the mouth while solids are masticated and a propulsion stage in which the tongue moves the bolus (the mass of chewed food towards the pharynx (the opening to the canal and the back of the mouth), (2) Pharyngeal Phase, which is triggered by receptors sending messages to the brainstem’s swallowing centre, this initiating a sequence of actions which prevent preventing aspiration and pushing the bolus down into the esophagus (the pathway between pharynx & stomach) and (3) Esophageal Phase in which the bolus enters the esophagus to be moved toward the stomach by rhythmic contractions of the esophageal muscles, the final wave of which relaxes the lower sphincter (a body-part with a valve-like function) to allow the bolus to enter the stomach.

The verb swallow was from the Middle English swolowen, swolwen, swolȝen, swelwen & swelȝen, from the Old English swelgan, from the Proto-West Germanic swelgan, from the Proto-Germanic swelganą (to swallow, revel, devour), from the primitive Indo-European swelk- (to gulp).  It was cognate with the Dutch zwelgen (to revel, carouse, guzzle), the German schwelgen (to delight, indulge), the Swedish svälja (to swallow, gulp), the Icelandic svelgja (to swallow) and the Old English swillan & swilian (to swill, wash out, gargle).  The noun swallow was from the Middle English swelwe & swolwe, from the Old English swelh & swelg (gulf, chasm) and ġeswelge (gulf, chasm, abyss, whirlpool), both from the Proto-West Germanic swelg & swalgi, from the Proto-Germanic swelgaz & swalgiz. It was cognate with the Old English swiliġe (pit), the Scots swelch, swellie & swallie (an abyss in the sea, a whirlpool), the Middle Low German swelch (whirlpool, eddy), the Dutch zwelg (gorge, chasm, gullet, throat) and the Old Norse svelgr (whirlpool, current, stream).  The spellings swalow & swolow are long obsolete. Swallow & swallowing are nouns & verbs, swallower is a noun and swallowed is a verb; the noun plural is swallows.

Impending deglutition: Lindsay Lohan swallowing yogurt.

The familiar sense is “to cause (food, drink, medicine etc) to pass from the mouth into the stomach (ie to take into the stomach via the throat) emerged as early as the eleventh century.  The figurative use includes geopolitics (“to swallow another territory or population (usually by annexation or aggression) based on the thirteenth century use to mean “to take (something) in so that it disappears; to consume, to absorb” and gullibility (To accept easily or without questions; inclined to believe) which was in use by the sixteenth century.  The idiomatic uses include “bitter (or difficult) pill to swallow” (something unpleasant or unwanted which must be accepted or endured), “swallow one’s pride” (To set aside one's feelings and adopt an alternative stance for pragmatic or other reasons), “swallow one’s words” (to be forced to retract a prior statement after it has been proved wrong or inappropriate; to take back what one has said) and “swallowed a dictionary (or thesaurus) (to speak or write using long or obscure words)

A swallow in flight.

In ornithology, the swallow is a small, migratory bird of the Hirundinidae family with long, pointed, moon-shaped wings and a forked tail; it feeds on the wing by catching insects and is best known for the phrase “one swallow does not a summer make”, the idea being that just because there are sightings of the migratory swallows arriving in their summer home, it does not guarantee summer weather from that point on.  The bird’s name was from the Middle English swalwe, swalewe & swalowe, from the Old English swealwe, from the Proto-West Germanic swalwā, from the Proto-Germanic swalwǭ.  It was cognate with the Danish & Norwegian svale, the Dutch zwaluw, the German Schwalbe and the Swedish svala.  In all languages, the name is believed to be onomatopoeic, imitating the bird's twittering and chattering calls.

The Swallow Sidecar company was an English firm set up in the early inter-war years and. As the name implies, its business was building the sidecars which could be attached to a motorcycle to enable a passenger to be carried.  The “Swallow” name was chosen because the company made a conscious attempt to style their sidecars with elegant lines and they hoped buyers would associate them with the agile, graceful bird.  The business flourished but in the 1920s so did the British economy as a prosperity spread, so did the demand for motor cars and Swallow Sidecar entered this growing market, their template being to purchase relatively inexpensive chassis from mainstream manufacturers and cloak them with rakish bodies.  Because a stylish body cost about the same to produce as something more prosaic, profits were good even though Swallow Sidecars sold their machines at very attractive prices.  To reflect the new business model, the company had by 1927 changed its name to Swallow Sidecar and Coachbuilding Company but with the cars rapidly coming to absorb most of the manufacturing capacity, by 1930 it was known as Swallow Coachbuilding.

1938 SS 100 Jaguar 3½-litre roadster.

Unlike many small coach-builders, this structure survived the Great Depression and became SS Cars Limited in 1934 and the “SS” may have been (1) an allusion to the original Swallow Sidecar or (2) just an attractive pair of letters for a car manufacturer (“S” by then already associated by many with high-performance) but it had come to be widely reported as a reference to “Standard Swallow” because most of the chassis them being used were supplied by the Standard company.  It was on an SS car that the “Jaguar” name was in 1935 first used, speedy or sleek animals becoming a popular choice of name in the 1930s and it’s the SS Jaguar 100 (referred to usually as the SS 100) which is the best remembered although very few were built (198 with the 2½ litre straight-six & 116 with a 3½-litre version).  The SS 100 provided the template which in the post-war years Jaguar would use to build their reputation: speed, rakish lines and value for money.  Like Shelby American’s take on the AC Cobra, there are now many more replica SS 100s than ever were built by the factory.

In 1945, as part of the planning for the resumption of production for vehicles for the civilian market, SS Cars changed its name to Jaguar Cars Limited but despite much subsequent speculation, there seems to be nothing to suggest it had anything to do with avoiding the common used name of the Nazi Schutzstaffel (the SS (ᛋᛋ in Armanen runes) 1925-1945) which was originally a party squad to provide security at public meetings (then often rowdy and violet affairs) which evolved into a personal bodyguard for Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945) before becoming first a paramilitary formation and finally a kind of parallel army (the Waffen-SS) hundreds of thousands strong).  Instead, it seems to have been that the market response to the Jaguar name had been positive and was in its field unique and would therefore not be confused with anything else.

Degrees of authenticity: 2017 Jaguar XKSS (continuation series)

In 1957, the "SS" moniker was revived for what was planned to be a run of 25 XKSSs, road-going conversions of the Le Mans-winning D-type (1954-1956); such things were possible in those happier, less regulated times.  However, nine of the cars earmarked for export to North America were lost in fire so only 16 were ever completed.  In 2016 Jaguar displayed the first of nine XKSS "continuation" models and these nine, using the serial numbers allocated in 1957 are regarded as a "continuation of the original run" to completion, Jaguar insisting it is not "cloning itself".  The project was well-received and the factory subsequently announced it would also continue the production run of the lightweight E-Types, again using the allocated but never absorbed ID numbers.  Other manufacturers, including Aston Martin, have embarked on their own continuation programmes and at a unit cost in excess of US$1 million, it's a lucrative business.