資料來源 : WordNet®

planetarium
     n 1: a building housing an instrument for projecting the
          positions of the planets onto a domed ceiling
     2: an optical device for projecting images of celestial bodies
        and other astronomical phenomena onto the inner surface of
        a hemispherical dome
     3: an apparatus or model for representing the solar systems
     [also: {planetaria} (pl)]

planetaria
     See {planetarium}