/ Dictionary / Index M manic-depressive illness: Meaning and Definition of Find definitions for: man'ic-depres'sive ill"ness. Pronunciation: [key] SeeAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. manic-depressive manic disorder Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language