/ Dictionary / Index P passive reason: Meaning and Definition of Find definitions for: pas'sive rea'son Pronunciation: [key] — Aristotelianism. Aristotelianism. the reasoning faculty existing only within an individual mind, limited in scope and perishing with the body. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. passive noun passive resistance Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language