/ Dictionary / Index I involutional melancholia: Meaning and Definition of Find definitions for: involu'tional melancho'lia Pronunciation: [key] — Psychiatry. Psychiatry. (formerly) extreme depression related to menopause or, less frequently, the male climacteric. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. involutional involve Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language