Breadcrumb Home > Dictionary > Index T triweekly: Meaning and Definition of Find definitions for: tri•week•ly Pronunciation: (trī-wēk'lē), [key] — adv., adj., n., pl. -lies. —adv. every three weeks. three times a week. —adj. occurring or appearing every three weeks. occurring or appearing three times a week. —n. a triweekly publication. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trivium -trix 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: avatar Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language