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1. (n.) planetarium
an apparatus or model representing the solar system.
2. planetarium
a device that produces a representation of the heavens by the use of moving projectors.
3. planetarium
the building or room in which such a device is housed.
Etymology: (1765–75; < NL, n. use of neut. of L planētāriusplanetary)
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| Definition of 'planetarium' |
Princeton's WordNet |
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1. (noun) planetarium
a building housing an instrument for projecting the positions of the planets onto a domed ceiling
2. (noun) planetarium
an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
3. (noun) planetarium
an apparatus or model for representing the solar systems
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| Definition of 'planetarium' |
Webster Dictionary |
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1. (noun) planetarium
an orrery. See Orrery
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Definitions of planetarium 
