(computing) A new computer part that has been removed from an unused, previously assembled system.

A parallel rewriting system; a rewriting system in which as many rewrite rules as possible are applied at each step.

A set of axioms or axiom schemata from which theorems can be derived.

The system of fraternities and sororities in North American colleges.

A computer system that uses techniques derived from artificial intelligence, particularly one in which such techniques are central to the operation or design of the system.

(law) A system of law in which advocates represent the prosecution and the defence and an impartial person (judge) or people (jury) determine the truth of the matter

(physics) A localized physical system consisting of interacting components, called degrees of freedom

A manner of responding to challenges with quick thinking and improvisation.

A fire alarm system.

A convention whereby Esperanto’s circumflex accents (ĉ, ĝ, ĥ, ĵ, ŝ, ŭ) are replaced by an x after the non-diacriticked letter (cx, gx, hx, jx, sx, ux), for convenience of typing.