pentahedra

pentahedron

[pen-tuh-hee-druhn]
noun, plural pentahedrons, pentahedra [pen-tuh-hee-druh] .
a solid figure having five faces.

Origin:
1655–65; penta- + -hedron

pentahedral, adjective
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World English Dictionary
pentahedron (ˌpɛntəˈhiːdrən)
 
n , pl -drons, -dra
See also polyhedron a solid figure having five plane faces
 
penta'hedral
 
adj

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