planisphere

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈplænɪˌsfɪə/US:USA pronunciation: respellingUSA pronunciation: respelling(plan′ə sfēr′, plā′nə-)


WordReference Random House Unabridged Dictionary of American English © 2026
plan•i•sphere  (plan′ə sfēr′, plā′nə-),USA pronunciation n. 
  1. Astronomya map of half or more of the celestial sphere with a device for indicating the part of a given location visible at a given time.
  2. Astronomya projection or representation of the whole or a part of a sphere on a plane.
  • Medieval Latin plānisphaerium
  • replacing Middle English planisperie 1350–1400; plani- + sphere
plan•i•spher•i•cal  (plan′ə sfer′i kəl, -sfēr′-, plā′nə-),USA pronunciation plan′i•spher′ic, plan•i•spher•al  (plan′i sfēr′əl, plā′nə-),USA pronunciation 
Collins Concise English Dictionary © HarperCollins Publishers::
planisphere /ˈplænɪˌsfɪə/ n
  1. a projection or representation of all or part of a sphere on a plane surface, such as a polar projection of the celestial sphere onto a chart
Etymology: 14th Century: from Medieval Latin plānisphaerium, from Latin plānus flat + Greek sphaira globe
'planisphere' also found in these entries (note: many are not synonyms or translations):
sphere

Forum discussions with the word(s) "planisphere" in the title:


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