/ Dictionary / Index D decrescent: Meaning and Definition of Find definitions for: de•cres•cent Pronunciation: (di-kres'unt), [key] — adj. diminishing; decreasing. waning, as the moon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. decrescendo decretal Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language