Planetarium

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Planetarium \Plan`e*ta"ri*um\, n. [NL.: cf. F. plan['e]taire.
     See {Planetary}.]
     An orrery. See {Orrery}.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:



  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)]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  22 Moby Thesaurus words for "planetarium":
     Cassegrainian telescope, Newtonian telescope, OAO, OSO,
     astronomical observatory, astronomical telescope, coelostat,
     coronagraph, coronograph, heliostat, observatory, orrery,
     radar telescope, radio observatory, radio telescope, reflector,
     refractor, spectrograph, spectroheliograph, spectrohelioscope,
     spectroscope, telescope