zenith
ze·nith / ˈzēni[unvoicedth]/ • n. [in sing.] the highest point reached by a celestial or other object: the missile reached its zenith and fell. ∎ the point in the sky or celestial sphere directly above an observer.The opposite of nadir. ∎ the time at which something is most powerful or successful: under Justinian, the Byzantine Empire reached its zenith of influence.DERIVATIVES: ze·nith·al / -nə[unvoicedth]əl/ adj.
zenith
zenith point of the sky directly overhead, †point of the horizon at which a heavenly body rises XIV; highest point or state XVII. ME. cenyth, senith, cinit — OF. cenit (mod. zénith) or medL. cenit, obscurely — Arab. samt in samt ar-ra's ‘path over the head’ (samt way, al the, AL-2, ra's head).
zenith
zenith the highest point reached by a celestial or other object; the point in the sky or celestial sphere directly above an observer; in figurative usage, the time at which something is most powerful or successful. Recorded from late Middle English, the word comes via Old French from medieval Latin cenit, based on Arabic samt (ar-ra's) ‘path (over the head)’.
zenith
zenith In astronomy, point on the celestial sphere that is directly overhead. The zenith distance of a heavenly body is the angle it makes with the zenith. It is diametrically opposite the nadir.
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