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Related to pentahedron: heptahedron
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n. pl. pen·ta·he·drons or pen·ta·he·dra (-drə)
A solid having five plane faces.

pen′ta·he′dral (-drəl) adj.


n, pl -drons or -dra (-drə)
(Mathematics) a solid figure having five plane faces. See also polyhedron
ˌpentaˈhedral adj


(ˌpɛn təˈhi drən)

n., pl. -drons, -dra (-drə).
a solid figure having five faces.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pentahedron - any polyhedron having five plane faces
polyhedron - a solid figure bounded by plane polygons or faces


nFünfflächner m, → Pentaeder nt
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References in classic literature ?
The Sphere would willingly have continued his lessons by indoctrinating me in the conformation of all regular Solids, Cylinders, Cones, Pyramids, Pentahedrons, Hexahedrons, Dodecahedrons, and Spheres: but I ventured to interrupt him.
The proposed cohesive modeling approach is described for hexahedron and pentahedron elements in RADIOSS.
One result is that such handiwork may convert a rectangular solid into a pentahedron.