Learn the meaning of veteran as a noun and an adjective, with examples of usage and synonyms. Find out the origin and pronunciation of veteran in British and American English. veteran , n. & adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary The meaning of VETERAN is a former member of the armed forces. How to use veteran in a sentence. Definition of veteran noun in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.