Appellate

Appellate (pronounced uh-pel-it)

(1) Of or pertaining to that which can be reviewed by a power or authority vested with the necessary jurisdiction.

(2) A court, tribunal or other body having the power or authority to review and decide appeals made against decisions issued by subordinate individuals or institutions.

1726: From the Classical Latin appellātus (called upon, summoned), past participle of appellāre (to appeal) and perfect passive participle of appellō (address as, call by name), the construct being ad (to, towards) +‎ pellō (push; impress).  Details of appellate jurisdiction in English courts appear in Sir William Blackstone's Commentaries on the Laws of England (1765–1769).

Courts of appeal

Appellate courts, usually styled as courts of appeal, are those vested with the jurisdiction to an appeal from a subordinate court within the same hierarchy.  In Australia, as a general principle, the court system exists in three layers (1) a trial court, (2) an intermediate appellate court and (3) a final court of appeal although variations exist and appeals from lower courts are not always of right; in many cases an application for leave to appeal can be declined.  The Australian court systems are now unitary which means that, depending on the law(s) involved, the avenue of appeal lies to a state, territory or Commonwealth court, appeals to the Privy Council in London sundered for commonwealth matters in 1968 and for those involving the states in 1986 by the Australia Acts.

Usually, it’s the more serious cases which proceed to the highest courts of appeal but the US Supreme Court has agreed to hear parking-ticket and other minor matters if the law under which a conviction was obtained happened in a jurisdiction where the offence was deemed one of absolute liability and an appeal not permitted.  In those matters, the court held that in the US, a legal principle existed that the state could not convict a citizen of something without granting a means of appealing the decision.