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| plan·e·tar·i·um [ plànnə térree əm ] (plural plan·e·tar·i·ums or plan·e·tar·i·a [ plànnə térree ə ]) |
noun |
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| Definition: |
| |
1. building with image of night sky: a building with a domed ceiling onto which movable images of the stars, planets, and other objects seen in the night sky are projected for an audience
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2. projector used in planetarium: the special projector used to project images of the night sky for an audience in a planetarium
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3. solar system model: a model of the solar system, often a working model showing how the planets revolve around the Sun
(
archaic
)
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| [Mid-18th century. < modern Latin< late Latin planetarius "astrologer" < planeta (see planet)] |
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