Usually means: Relating to a nine-sided polygon.
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We found 6 dictionaries that define the word nonagonal:

General (5 matching dictionaries)
  1. nonagonal: Oxford Learner's Dictionaries
  2. nonagonal: Collins English Dictionary
  3. nonagonal: Wiktionary
  4. nonagonal: Dictionary.com
  5. nonagonal: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. nonagonal: Encyclopedia

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Definitions from Wiktionary (nonagonal)

▸ adjective:  Having nine sides and nine angles

Similar:
undecagonal, enneagonal, dodecagonal, heptagonal, enneahedral, septagonal, octagonal, hendecagonal, octangular, six-sided, more...

Opposite:
Enneagonal, nine-sided, nonagon.

Types:
enneagon, decagon, nonagon, octagon, heptagon, hexagon, pentagon, quadrilateral, triangle, more...

▸ Words similar to nonagonal

▸ Usage examples for nonagonal

▸ Idioms related to nonagonal

▸ Wikipedia articles (New!)

▸ Popular nouns described by nonagonal

▸ Words that often appear near nonagonal

▸ Rhymes of nonagonal

▸ Invented words related to nonagonal

Similar:
undecagonal, enneagonal, dodecagonal, heptagonal, enneahedral, septagonal, octagonal, hendecagonal, octangular, six-sided, more...

Opposite:
Enneagonal, nine-sided, nonagon.

Types:
enneagon, decagon, nonagon, octagon, heptagon, hexagon, pentagon, quadrilateral, triangle, more...



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