from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A model of the celestial sphere showing the positions of the stars and other celestial bodies as well as circles of right ascension, declination, the celestial equator, and the ecliptic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a globe that is a spherical model of the heavens
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