nonagon

[ non-uh-gon, -guh n ]
/ ˈnɒn əˌgɒn, -gən /
SEE SYNONYMS FOR nonagon ON THESAURUS.COM

noun

a polygon having nine angles and nine sides.
Also called enneagon.

Origin of nonagon

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

nonachiever, nonaddictive, nonage, nonagenarian, nonaggression, nonagon, nonagricultural, nonalcoholic, nonaligned, nonaligned nations, nonalignment

Words related to nonagon

ninth

Example sentences from the Web for nonagon

  • 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

a polygon having nine sides Also called: enneagon

Derived forms of nonagon

nonagonal (nɒnˈæɡənəl), adjective