'Prerequisite' definitions:

Definition of 'prerequisite'

From: WordNet
adjective
Required as a prior condition or course of study
noun
Something that is required in advance; "Latin was a prerequisite for admission" [syn: prerequisite, requirement]

Definition of 'Prerequisite'

From: GCIDE
  • Prerequisite \Pre*req"ui*site\, a. Previously required; necessary as a preliminary to any proposed effect or end; as, prerequisite conditions of success. [1913 Webster]

Definition of 'Prerequisite'

From: GCIDE
  • Prerequisite \Pre*req"ui*site\, n. Something previously required, or necessary to an end or effect proposed. [1913 Webster]
  • The necessary prerequisites of freedom. -- Goldsmith. [1913 Webster]