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pentahedron

[pen-tuh-hee-druh n] /ˌpɛn təˈhi drən/
noun, plural pentahedrons, pentahedra
[pen-tuh-hee-druh] /ˌpɛn təˈhi drə/ (Show IPA)
1.
a solid figure having five faces.
Origin
1655-1665
1655-65; penta- + -hedron
Related forms
pentahedral, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pentahedra's

pentahedron

/ˌpɛntəˈhiːdrən/
noun (pl) -drons, -dra (-drə)
1.
a solid figure having five plane faces See also polyhedron
Derived Forms
pentahedral, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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