(computing) A computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.

(automotive) The subsystem of an engine that takes in air from the environment and delivers it to the combustion chamber

(automotive) The subsystem of an engine that takes the products of the combustion chamber through a catalytic converter and silencer to the exhaust pipe

(philosophy) A consistent set of moral axioms or principles.

public address system

(anatomy) The system through which digestive waste is removed from the body.

A group of smaller bodies (such as planets or asteroids) that orbit one or more stars.

(logic) A set of axioms from which theorems can be derived.

An electronic system used to reproduce sound. / The set of speech sounds that make up a language; a phonology.

(politics) A democratic parliamentary system of government, used by and modelled after the British parliament in Westminster.