/ Dictionary / Index Z zenith: Meaning and Definition of Find definitions for: ze•nith Pronunciation: (zē'nith or, esp. Brit., zen'ith), [key] — n. the point on the celestial sphere vertically above a given position or observer. Cf. a highest point or state; culmination. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zenith (Thesaurus) Zenist zenithal Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language