Found 2 items, similar to planetarium.
English → English (WordNet) Definition: planetarium 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)]
English → English (gcide) Definition: Planetarium Planetarium \Plan`e*ta"ri*um\, n. [NL.: cf. F. plan['e]taire. See Planetary.] An orrery. See Orrery. [1913 Webster]