/ Dictionary / Index E expiation: Meaning and Definition of Find definitions for: ex•pi•a•tion Pronunciation: (ek"spē-ā'shun), [key] — n. the act of expiating. the means by which atonement or reparation is made. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: expiation (Thesaurus) expiate expiatory Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language