Pentagonal
Pronunciation : Pen*tag"o*nal
Part of Speech : a.
Etymology : [Cf. F. pentagonal, pentagone, L. pentagonus, pentagonius, Gr.
Definition : Defn: Having five corners or angles. Pentagonal dodecahedron. See Dodecahedron, and Pyritohedron.
Source : Webster's Unabridged Dictionary, 1913