pentahedron

(pen′tə hēdrən)

noun pl. pentahedrons or pentahedra

a solid figure with five plane surfaces

Origin: ModL: see penta- & -hedron

Related Forms:

See pentahedron in American Heritage Dictionary 4

noun pl. pen·ta·he·drons or pen·ta·he·dra (-drə)
A solid having five plane faces.

Related Forms:

  • penˌta·heˈdral (-drəl) adjective
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