prerequisite
n. முற்படு தேவை, நிபந்தனை, (பெ.) முன்நிபந்தனையான.
Pre*req"ui*site, a. Defn: Previously required; necessary as a preliminary to any proposed effect or end; as, prerequisite conditions of success. Pre*req"ui*site, n. Defn: Something previously required, or necessary to an end or effect proposed. The necessary prerequisites of freedom. Goldsmith.