nonagon

[ non-uh-gon, -guhn ]
See synonyms for nonagon on Thesaurus.com
noun
  1. a polygon having nine angles and nine sides.

Origin of nonagon

1
1680–90; <Latin nōn(us) ninth + -a- (extracted from pentagon, hexagon, etc.) + -gon

Other words from nonagon

  • non·ag·o·nal [non-ag-uh-nl], /nɒnˈæg ə nl/, adjective

Words Nearby nonagon

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use nonagon in a sentence

  • There is said to be only one triangle, only one nonagon, and only one of diamond shape in all the forty thousand.

    One Irish Summer | William Eleroy Curtis

British Dictionary definitions for nonagon

nonagon

/ (ˈnɒnəˌɡɒn) /


noun
  1. a polygon having nine sides: Also called: enneagon

Derived forms of nonagon

  • nonagonal (nɒnˈæɡənəl), 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