planisphere Hear it!

planisphere definition

plani·sphere (plan′i sfir′)

noun

  1. a map or chart that is the projection on a plane of all or part of a sphere
  2. a projection on a plane of the celestial sphere, usually with the N or S celestial pole as the center

Etymology: ML planisphaerium: see plani- & sphere

Related Forms:

  • planispheric plan′i·spher′ic (-sfer′ik, -sfir′-) adjective

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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