A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.

Alternative letter-case form of Arcadia

plural of black-arched moth

plural of arch doxy

The office of an archdeacon, or the term of that office / The residence, or territorial jurisdiction of an archdeacon

A leisure establishment, freely open to the public, containing a variety of coin-operated devices, some of which are for amusement only, while others may offer the possibility of winning small prizes.

(medicine) Takayasu's arteritis

Alternative spelling of system architecture

(software, system theory) The conceptual model that defines the behavior, structure, and more views of a system.

(software) The set of structures needed to reason about a given software system.