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Pronunciation: (plan"i-târ'ē-um), [key]
pl. -tar•i•ums, -tar•i•aPronunciation: (-târ'ē-u). [key]

1. an apparatus or model representing the planetary system.
2. a device that produces a representation of the heavens by the use of a number of moving projectors.
3. the building or room in which such a device is housed.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

plane tableplanetary
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