'Postgraduate' definitions:

Definition of 'postgraduate'

(from WordNet)
adjective
Of or relating to studies beyond a bachelor's degree; "graduate courses" [syn: graduate(a), postgraduate]
noun
A student who continues studies after graduation [syn: graduate student, grad student, postgraduate]

Definition of 'Postgraduate'

From: GCIDE
  • Postgraduate \Post*grad"u*ate\, a. [Pref. post- + graduate.] Of, pertaining to, or designating, the studies pursued after graduation, esp., after receiving the bachelor's degree at a college; graduate. -- n. A student who pursues such studies.
  • Note: Most careful writers consider the word graduate to be the proper word to use in this sense. [Webster 1913 Suppl.]

Synonyms of 'postgraduate'

From: Moby Thesaurus