Dictionary
Thesaurus
Reference
Translate
Web
Related Searches
on Ask.com
Browse Nearby Entries
planetarium
2 dictionary results for: planetaria
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

plan⋅e⋅tar⋅i⋅um

   [plan-i-tair-ee-uhm]
–noun, plural -tar⋅i⋅ums, -tar⋅i⋅a  [-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.
Origin:
1765–75; < NL, n. use of neut. of L planētārius planetary; cf. -arium
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Cite This Source
American Heritage Dictionary - Cite This Source - Share This
plan·e·tar·i·um     (plān'ĭ-târ'ē-əm)  Pronunciation Key 
n.   pl. plan·e·tar·i·ums or plan·e·tar·i·a (-ē-ə)
  1. An apparatus or model representing the solar system.
    1. An optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome.
    2. A building or room containing a planetarium, with seats for an audience.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Share This:Share This: digg.comShare This: ma.gnolia.comShare This: www.stumbleupon.comShare This: del.icio.usShare This: FacebookShare This: favorites.live.comShare This: www.technorati.comShare This: furl.netShare This: myweb2.search.yahoo.comShare This: www.google.com