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Planisphere - Meaning, Definition & English Examples

A planisphere is a rotating star chart that shows the visible stars and constellations for any date and time. It helps astronomers and stargazers locate celestial objects in the night sky.

planisphere

/ˈplænɪˌsfɪr/ /ˈplænɪˌsfɪə/

Definition:

A map projection of the celestial sphere onto a flat surface, showing stars and constellations.

Synonyms:

star chart, celestial map, sky map

Part of Speech:

noun

Antonyms:

globe, sphere

Common Collocations:

astronomical planisphere, rotating planisphere, night sky planisphere

Derivatives:

planispheric, planispherical

Usage Tips:

Use "planisphere" to refer to a flat star map; ensure context relates to astronomy or stargazing.

Common Phrases:

celestial navigation tool, star-finding aid, sky guide

Etymology:

From Latin "planus" (flat) + Greek "sphaira" (sphere), meaning a flat representation of a sphere.

Examples:

  • 1. The planisphere helps beginners identify stars at night.
  • 2. She bought a rotating planisphere for her astronomy class.
  • 3. The planisphere displays visible constellations for any date and time.
  • 4. He used the planisphere to locate Jupiter in the sky.

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