/ Dictionary / Index D deviationism: Meaning and Definition of Find definitions for: de•vi•a•tion•ism Pronunciation: (dē"vē-ā'shu-niz"um), [key] — n. (in Communist ideology) departure from accepted party policies or practices. any deviation from official policy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deviationism (Thesaurus) deviation device Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language