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plan·e·tar·ium
 planetarium
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- 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.
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| definition 2: |
a museum, building, or room in which such a device is located.
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