/ Dictionary / Index D deduce: Meaning and Definition of Find definitions for: de•duce Pronunciation: (di-ds', -dys'), [key] — -duced, -duc•ing. to derive as a conclusion from something known or assumed; infer: From the evidence the detective deduced that the gardener had done it. to trace the derivation of; trace the course of: to deduce one's lineage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deduce (Thesaurus) dedolomitize deduct Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language