Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A polygon with eight sides and eight angles.

from The Century Dictionary.

  • noun A gold coin of octagonal shape, of the value of 50 dollars, issued in 1851 by the United States assay-office in San Francisco.
  • noun In geometry, a figure of eight angles and eight sides. When the sides and angles are equal, it is a regular octagon.
  • noun In fortification, a work with eight bastions.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Geom.) A plane figure of eight sides and eight angles.
  • noun Any structure (as a fortification) or place with eight sides or angles.
  • noun one in which the sides are all equal, and the angles also are all equal.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geometry A polygon with eight sides and eight angles.
  • noun martial arts, usually capitalized The arena for mixed martial arts, particularly as trademarked by the UFC.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an eight-sided polygon

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin octagōnon, from Greek oktagōnon, from neuter of oktagōnos, octagonal : okta-, octo- + -gōnos, angled; see –gon.]

Examples

Comments

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  • can't forget doctor octagon

    December 9, 2008