Pentagonal

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From WordNet (r) 2.0 [wn]:

  pentagonal
       adj : of or relating to or shaped like a pentagon [syn: {pentangular}]