heptagon

[hep-tuh-gon, -guh n]

Origin of heptagon

First recorded in 1560–70, heptagon is from the Greek word heptágōnos seven-cornered. See hepta-, -gon
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Examples from the Web for heptagon

Historical Examples of heptagon


British Dictionary definitions for heptagon

heptagon

noun
  1. a polygon having seven sides
Derived Formsheptagonal (hɛpˈtæɡənəl), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for heptagon
n.

1560s, from Middle French heptagon, from Greek heptagonon, from hepta "seven" (cognate with Latin septem, Gothic sibun, Old English seofon; see seven) + gonia "angle" (see knee (n.)). Related: Heptagonal.

Online Etymology Dictionary, © 2010 Douglas Harper

heptagon in Science

heptagon

[hĕptə-gŏn′]
  1. A polygon having seven sides.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.