Breadcrumb Home > Dictionary > Index A active reason: Meaning and Definition of Find definitions for: ac'tive rea'son Pronunciation: [key] — Aristotelianism. Aristotelianism. an activity of intellect, embodying universal truth, potentially present in the mind of every individual, and when present, forming the only immortal part of the individual. Cf. passive reason. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. active-matrix active site TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language