Prerequisite

[priː'rekwɪzɪt] or [,pri'rɛkwəzɪt]

(noun.) something that is required in advance; 'Latin was a prerequisite for admission'.

(adj.) required as a prior condition or course of study .

Inputed by Gustav--From WordNet

(a.) Previously required; necessary as a preliminary to any proposed effect or end; as, prerequisite conditions of success.

(n.) Something previously required, or necessary to an end or effect proposed.

Editor: Seth

n. Requirement.

Checked by Dylan

n. something previously necessary: something needed in order to gain an end.—adj. required as a condition of something else.

Checker: Ophelia