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planisphere |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Planisphere \Plan"i*sphere\, n. [Plani- + sphere: cf F. planisph[`e]re. See {Plain}, and {Sphere}.] The representation of the circles of the sphere upon a plane; especially, a representation of the celestial sphere upon a plane with adjustable circles, or other appendages, for showing the position of the heavens, the time of rising and setting of stars, etc., for any given date or hour.
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