/ Dictionary / Index E equanimity: Meaning and Definition of Find definitions for: e•qua•nim•i•ty Pronunciation: (ē"kwu-nim'i-tē, ek"wu-), [key] — n. mental or emotional stability or composure, esp. under tension or strain; calmness; equilibrium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: equanimity (Thesaurus) Equanil equanimous Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language