/ Dictionary / Index I immediate constituent: Meaning and Definition of Find definitions for: imme'diate constit'uent Pronunciation: [key] — Gram. Gram. one of the usually two largest constituents of a construction: The immediate constituents of He ate his dinner are he and ate his dinner; of ate his dinner are ate and his dinner; etc. Abbr.: IC&hasp;&hasp; Cf. ultimate constituent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. immediate annuity immediately Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language