Breadcrumb Home > Dictionary > Index N natatorium: Meaning and Definition of Find definitions for: na•ta•to•ri•um Pronunciation: (nā"tu-tôr'ē-um, -tōr'-, nat"u-), [key] — pl. -to•ri•ums, -to•ri•a a swimming pool, esp. one that is indoors. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: natatorium (Thesaurus) natatorial natch 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: erudite Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language