Breadcrumb Home > Dictionary > Index O overthrust belt: Meaning and Definition of Find definitions for: o'verthrust belt" Pronunciation: [key] — Geol. (sometimes caps.)Geol. an elongate area in which thick rock layers have been pushed over one another by compressional forces within the earth's crust. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. overthrust overtime 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: aspirant Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language