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nadir
From The Collaborative International Dictionary of English v.0.48:
Nadir \Na"dir\ (n[=a]"d[~e]r), n. [F., Sp., & It. nadir; all fr. Ar. naz[imac]ru's samt nadir, prop., the point opposite the zenith (as samt), in which naz[imac]r means alike, corresponding to. Cf. Azimuth, Zenith.] 1. That point of the heavens, or lower hemisphere, directly opposite the zenith; the inferior pole of the horizon; the point of the celestial sphere directly under the place where we stand. [1913 Webster] 2. The lowest point; the time of greatest depression. [1913 Webster] The seventh century is the nadir of the human mind in Europe. --Hallam. [1913 Webster] Nadir of the sun (Astron.), the axis of the conical shadow projected by the earth. --Crabb. [1913 Webster]
