/ Dictionary / Index I improver: Meaning and Definition of Find definitions for: im•prov•er Pronunciation: (im-pr'vur), [key] — n. a person or thing that improves. a substance or agent added to improve a food, esp. as a preservative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: improver (Thesaurus) improvement improvident Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language