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planisphere.

Any representation (map projection) of part of a sphere on a plane surface.

11 characters3 syllables approx.English language

Meaning & usage

noun/ˈpleɪ.nɪˌsfɪɚ/US/ˈplæn.ɪˌsfɪɚ/US
  1. Any representation (map projection) of part of a sphere on a plane surface.

  2. A map constructed by stereographic projection, as described in Ptolemy's treatise Planisphaerium and later used in planispheric astrolabes

  3. A map of the whole world, especially those from the 16th–17th century

  4. Any of several charts of the celestial sphere having an overlay or window that may be adjusted to show the stars visible at a particular time, or from a particular place.

Where this word comes from

From plani- + sphere or plani- + -sphere.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.