Century Dictionary and Cyclopedia
- n. An astronomical instrument composed of two cones on the surfaces of which the constellations with their stars are delineated. It was formerly used as a substitute for the celestial globe.
- n. An old astronomical instrument formed of two cones, on whose surface the constellations were delineated.
GNU Webster's 1913
- n. An old astronomical instrument, formed of two cones, on whose surface the constellations were delineated.
- astro- + -scope (Wiktionary)
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