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Definition of Zenith
1. Noun. The point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected.
Group relationships: Celestial Sphere, Empyrean, Firmament, Heavens, Sphere, Vault Of Heaven, Welkin
Antonyms: Nadir
Derivative terms: Zenithal
Definition of Zenith
1. n. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; -- opposed to nadir.
2. n. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; -- opposed to nadir.
Definition of Zenith
1. Noun. (astronomy) The point in the sky vertically above a given position or observer; the point in the celestial sphere opposite the nadir. ¹
2. Noun. (astronomy) The highest point in the sky reached by a celestial body. ¹
3. Noun. Highest point or state; peak. ¹
¹ Source: wiktionary.com
Definition of Zenith
1. the highest point [n -S] : ZENITHAL [adj]
Medical Definition of Zenith
1.
1. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; opposed to nadir. "From morn To noon he fell, from noon to dewy eve, A summer's day; and with the setting sun Dropped from the zenith, like a falling star." (Milton)
2. Hence, figuratively, the point of culmination; the greatest height; the height of success or prosperity. "I find my zenith doth depend upon A most auspicious star." (Shak) "This dead of midnight is the noon of thought, And wisdom mounts her zenith with the stars." (Mrs. Barbauld) "It was during those civil troubles . . . This aspiring family reached the zenith." (Macaulay) Zenith distance.