n.
A polygon with ten angles and ten sides.
[Medieval Latin decagōnum, from Greek dekagōnon, from neuter of dekagōnos, having ten angles : deka, ten + -gōnos, angled; see -gon.]
decagonal de·cag'o·nal (dĭ-kăg'ə-nəl) adj.decagonally de·cag'o·nal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
