/ Dictionary / Index A adnoun: Meaning and Definition of Find definitions for: ad•noun Pronunciation: (ad'noun"), [key] — n. Gram. an adjective used as a noun, as meek in Blessed are the meek; absolute adjective. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adnoun (Thesaurus) adnominal ado Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language