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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.
Among them, the brake caliper adopts the tetrahedral mesh (C3D4) due to the irregular structure, the remaining parts mainly adopt hexahedral unit (C3D8), supplemented with pentahedron unit (C3D6) and terahedral unit (C3D4), and the total number of model units is 327,568.
The proposed cohesive modeling approach is described for hexahedron and pentahedron elements in RADIOSS.
The interface cell [[DELTA].sub.1234] is cut into a triangular pyramid [P.sub.1567] and a pentahedron [P.sub.567234]; see Figure 4(a).