Word:

Planetarium

Plan`e`ta´ri`um
n.1.An orrery. See Orrery.
Noun1.Planetariumplanetarium - a building housing an instrument for projecting the positions of the planets onto a domed ceiling
2.planetarium - an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
3.planetarium - an apparatus or model for representing the solar systems
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
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plane ticket
Plane tree
Plane trigonometry
Plane-parallel
plane-polarized
plane-tree family
planeness
Planer
Planer centers
Planer tree
Planera
Planet
planet gear
planet wheel
Planet-stricken
planetal
-- Planetarium --
Planetary
Planetary days
planetary gear
planetary house
planetary nebula
Planetary precession
Planeted
planetesimal
planetesimal hypothesis
Planetic
Planetoid
Planetoidal
Planetule
Plangency
Plangent
Plani-
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