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planetarium

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noun plan·e·tar·i·um \ˌpla-nə-ˈter-ē-əm\

Simple Definition of planetarium

  • : a building or room in which images of stars, planets, etc., are shown on a high, curved ceiling

Source: Merriam-Webster's Learner's Dictionary

Full Definition of planetarium

plural

planetariums

or

planetaria

play \-ē-ə\
  1. 1 :  a model or representation of the solar system

  2. 2 a :  an optical device for projecting various celestial images and effects b :  a building or room housing such a projector

1734

First Known Use of planetarium

1734

Rhymes with planetarium


PLANETARIUM Defined for Kids

planetarium

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noun plan·e·tar·i·um \ˌpla-nə-ˈter-ē-əm\

Definition of planetarium for Students

  1. :  a building in which there is a device for projecting the images of heavenly bodies on a ceiling shaped like a dome




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