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6 dictionary results for: planetoid
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

plan⋅et⋅oid

   [plan-i-toid]
–noun Astronomy.
an asteroid.
Origin:
1795–1805; planet + -oid
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
as·ter·oid     (ās'tə-roid')  Pronunciation Key 
n.  
  1. Astronomy Any of numerous small celestial bodies that revolve around the sun, with orbits lying chiefly between Mars and Jupiter and characteristic diameters between a few and several hundred kilometers. Also called minor planet, planetoid.
  2. Zoology See starfish.
adj.   also as·ter·oi·dal (ās'tə-roid'l)
Star-shaped.

[From Greek asteroeidēs, starlike : astēr, star; see ster-3 in Indo-European roots + -oeidēs, -oid.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage Dictionary - Cite This Source - Share This
plan·e·toid     (plān'ĭ-toid')  Pronunciation Key 
n.   See asteroid.
plan'e·toi'dal (-toid'l) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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WordNet - Cite This Source - Share This
planetoid

noun
any of numerous small celestial bodies that move around the sun [syn: minor planet] 

WordNet® 3.0, © 2006 by Princeton University.
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The American Heritage Science Dictionary - Cite This Source - Share This
planetoid   (plān'ĭ-toid')  Pronunciation Key 
See asteroid.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Planetoid

Plan"et*oid\, n. [Planet + -oid.] (Astron.) A body resembling a planet; an asteroid.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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