/ Dictionary / Index D deduct: Meaning and Definition of Find definitions for: de•duct Pronunciation: (di-dukt'), [key] — v.t. to take away, as from a sum or amount: Once you deduct your expenses, there is nothing left. —v.i. detract; abate (usually fol. by from): The rocky soil deducts from the value of his property. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deduct (Thesaurus) deduce deductible Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language