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From The Collaborative International Dictionary of English v.0.48:
Urania \U*ra"ni*a\, n. [L., from Gr. ?, i. e., the Heavenly, fr. ? heavenly, fr. ? heaven.] [1913 Webster] 1. (Class. Myth.) One of the nine Muses, daughter of Zeus by Mnemosyne, and patron of astronomy. [1913 Webster] 2. (Zool.) A genus of large, brilliantly colored moths native of the West Indies and South America. Their bright colored and tailed hind wings and their diurnal flight cause them to closely resemble butterflies. [1913 Webster]