Found 2 items, similar to pentagonal.
English → English (WordNet) Definition: pentagonal pentagonal adj : of or relating to or shaped like a pentagon [syn: pentangular]
English → English (gcide) Definition: Pentagonal Pentagonal \Pen*tag"o*nal\, a. [Cf. F. pentagonal, pentagone, L. pentagonus, pentagonius, Gr. ?.] Having five corners or angles. [1913 Webster] Pentagonal dodecahedron. See Dodecahedron, and Pyritohedron. [1913 Webster]