Breadcrumb Home > Dictionary > Index R reality principle: Meaning and Definition of Find definitions for: real'ity prin"ciple Pronunciation: [key] — Psychoanal. Psychoanal. the motivating force or mechanism by which the child, who has previously sought immediate gratification of all wishes, realizes that gratification must sometimes be deferred or forgone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. reality check reality testing 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: minatory Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language