/ Dictionary / Index C conversion disorder: Meaning and Definition of Find definitions for: conver'sion disor"der Pronunciation: [key] — Psychiatry. Psychiatry. a mental disorder in which physical symptoms, as paralysis or blindness, occur without apparent physical cause and instead appear to result from psychological conflict or need. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. conversion conversion ratio Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language