/ Dictionary / Index B betterment: Meaning and Definition of Find definitions for: bet•ter•ment Pronunciation: (bet'ur-munt), [key] — n. the act or process of bettering; improvement. an improvement of property other than by mere repairs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: betterment (Thesaurus) better half betterment tax Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language