Search Result for "heptagon": 
Wordnet 3.0

NOUN (1)

1. a seven-sided polygon; 



The Collaborative International Dictionary of English v.0.48:

Heptagon \Hep"ta*gon\, n. [Gr. ? sevencornered; "epta` seven + ?
   angle: cf. F. heptagone.] (Geom.)
   A plane figure consisting of seven sides and having seven
   angles.
   [1913 Webster]


WordNet (r) 3.0 (2006):

heptagon
    n 1: a seven-sided polygon