pentahedron

[ pen-tuh-hee-druhn ]
/ ˌpɛn təˈhi drən /

noun, plural pen·ta·he·drons, pen·ta·he·dra [pen-tuh-hee-druh]. /ˌpɛn təˈhi drə/.

a solid figure having five faces.

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Origin of pentahedron

First recorded in 1655–65; penta- + -hedron

OTHER WORDS FROM pentahedron

pen·ta·he·dral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for pentahedron

pentahedron
/ (ˌpɛntəˈhiːdrən) /

noun plural -drons or -dra (-drə)

a solid figure having five plane facesSee also polyhedron

Derived forms of pentahedron

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