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Planetarium

//plænɪˈtɛəɹɪəm// noun

Definitions

Noun
  1. 1
    A display museum in which images of stars and other astronomical phenomena are projected onto a domed ceiling.
  2. 2
    an apparatus or model for representing the solar systems wordnet
  3. 3
    An orrery.
  4. 4
    an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome wordnet
  5. 5
    a building housing an instrument for projecting the positions of the planets onto a domed ceiling wordnet

Etymology

Borrowed from New Latin planētārium. Equivalent to planet + -arium.

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