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Dictionary Language resources

planisphere

Pronunciation: /ˈplanɪsfɪə/

Definition of planisphere

noun

a map formed by the projection of a sphere or part of a sphere on a plane, especially an adjustable circular star map that shows the appearance of the heavens at a specific time and place.

Derivatives

planispheric

Origin:

late Middle English planisperie, from medieval Latin planisphaerium, from Latin planus 'level' + sphaera 'sphere'; later influenced by French planisphère