/ Dictionary / Index R ruination: Meaning and Definition of Find definitions for: ru•in•a•tion Pronunciation: (r"u-nā'shun), [key] — n. the act or state of ruining or the state of being ruined. something that ruins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ruination (Thesaurus) ruinate ruinous 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