/ Dictionary / Index C celestial horizon: Meaning and Definition of Find definitions for: celes'tial hori'zon Pronunciation: [key] — Astron. Astron. See under(def. 2b). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. celestial hierarchy celestial latitude Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language