pentahedron
pen·ta·hed·ron
noun
1.
any polyhedron having five plane faces
Origin
From penta- + -hedron.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.