Breadcrumb Home > Dictionary > Index C celestial equator: Meaning and Definition of Find definitions for: celes'tial equa'tor Pronunciation: [key] — Astron., Navig. Astron.,Navig. the great circle of the celestial sphere, lying in the same plane as the earth's equator. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Celestial Empire celestial globe 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: voxpopuli Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language