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DODECAHEDRON

 - 4 dictionary results

do⋅dec⋅a⋅he⋅dron

  [doh-dek-uh-hee-druhn, doh-dek-]
–noun, plural -drons, -dra  [-druh] . Geometry, Crystallography.
a solid figure having 12 faces.
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Origin:
1560–70; dodeca- + -hedron

Related forms:
do⋅dec⋅a⋅he⋅dral, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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do·dec·a·he·dron   (dō'děk-ə-hē'drən)   


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n.   pl. do·dec·a·he·drons or do·dec·a·he·dra (-drə)
A polyhedron with 12 faces.

[Greek dōdekaedron : dōdeka, twelve; see dodecagon + -edron, -hedron.]
do'dec·a·he'dral adj.
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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Word Origin & History

dodecahedron 
1570, from Gk. dodeka "twelve" (short for duodeka, from duo "two" + deka "ten") + hedra "seat, base, chair, face of a geometric solid," from PIE base *sed- "to sit" (see sedentary).
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
dodecahedron   (dō'děk-ə-hē'drən)  Pronunciation Key 
Plural dodecahedrons or dodecahedra
A polyhedron having twelve faces.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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