dodecahedron

[doh-dek-uh-hee-druhn, doh-dek-] Origin

do·dec·a·he·dron

[doh-dek-uh-hee-druhn, doh-dek-]
noun, plural do·dec·a·he·drons, do·dec·a·he·dra [-druh] . Geometry, Crystallography.
a solid figure having 12 faces.

Origin:
1560–70; dodeca- + -hedron

do·dec·a·he·dral, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To dodecahedron

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Dodecahedron has a plethora of syllables.
So is floccinaucinihilipilification. Does it mean:
the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
(used as a nonsense word by children to express approval or to represent the longest word in English.)
Collins
World English Dictionary
dodecahedron (ˌdəʊdɛkəˈhiːdrən)
 
n
See also polyhedron a solid figure having twelve plane faces. A regular dodecahedron has regular pentagons as faces
 
dodeca'hedral
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
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, © 2010 Douglas Harper
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American Heritage
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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