Breadcrumb Home > Dictionary > Index S Sister of Mercy: Meaning and Definition of Find definitions for: Sis'ter of Mer'cy Pronunciation: [key] — Rom. Cath. Ch. Rom. Cath. Ch. a member of a congregation of sisters founded in Dublin in 1827 by Catherine McAuley (1787–1841) and engaged chiefly in works of spiritual and corporal mercy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sister of Loretto Sistine TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: polymath Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language