Definitions

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

  • n. A polygon with nine sides.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A polygon with nine sides and nine angles.

from the GNU version of the Collaborative International Dictionary of English

  • n. A plane figure or polygon having nine sides and nine angles.

from The Century Dictionary and Cyclopedia

  • n. A figure having nine sides and nine angles.

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

  • n. a nine-sided polygon

Etymologies

Sorry, no etymologies found.

Examples

  • Euclid was able to draw an equilateral triangle, square, pentagon and hexagon, but recall that the heptagon (which has seven sides) and the nonagon (nine) eluded him.

    HERE’S LOOKING AT EUCLID

  • The octagon is constructable, but then the nonagon again is not.

    HERE’S LOOKING AT EUCLID

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