pentahedron

[ pen-tuh-hee-druhn ]

noun

, plural pen·ta·he·drons, pen·ta·he·dra [pen-t, uh, -, hee, -dr, uh].

1. a solid figure having five faces.

pentahedron

/ ˌpɛntəˈhiːdrən /

noun

1. See polyhedron
   a solid figure having five plane faces See also polyhedron

Derived Forms

• ˌpentaˈhedral, adjective

Other Words From

• penta·hedral adjective

Word History and Origins

Origin of pentahedron¹

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