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planetarium

plan·e·tar·ium

planetarium

 
pronunciation:
plae n teI ri m
features:
Word Explorer, Word Parts
part of speech: noun
inflections: planetaria, planetariums
definition 1: a device that projects images of the sun, moon, stars, and planets on a ceiling that is shaped like a dome.
definition 2: a museum, building, or room in which such a device is located.
Word Explorer
See
  outer space, space
Word Parts
The word planetarium contains the following part:
-arium, -orium Latin noun-forming suffix that means a place for
synonyms:
-atory, -ary2