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Definition of planetarium - 4 dictionary results
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plan⋅e⋅tar⋅i⋅um
[plan-i-tair-ee-uh
m] 
–noun, plural -tar⋅i⋅ums, -tar⋅i⋅a [-tair-ee-uh] .
[-tair-ee-uh] . | 1. | an apparatus or model representing the planetary system. |
| 2. | a device that produces a representation of the heavens by the use of a number of moving projectors. |
| 3. | the building or room in which such a device is housed. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Link To planetarium
| plan·e·tar·i·um (plān'ĭ-târ'ē-əm) n. pl. plan·e·tar·i·ums or plan·e·tar·i·a (-ē-ə)
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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planetarium
1734, "orrery," Mod.L., from L.L. planeta (see planet) + L. -arium "a place for." Mod. sense of "device for projecting the night sky onto the interior of a dome" is attested from 1929.
Online Etymology Dictionary, © 2001 Douglas Harper
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