/ Dictionary / Index D deductive: Meaning and Definition of Find definitions for: de•duc•tive Pronunciation: (di-duk'tiv), [key] — adj. based on deduction from accepted premises: deductive argument; deductive reasoning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deductive (Thesaurus) deduction de Duve Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language