pentahedron

from WordNet (r) 3.0 (2006)
pentahedron
    n 1: any polyhedron having five plane faces
from The Collaborative International Dictionary of English v.0.48
Pentahedron \Pen`ta*he"dron\, n. [Penta- + Gr. "e`dra seat,
   base.]
   A solid figure having five sides.
   [1913 Webster]
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