Share this entry

Share this page

nonagon

Line breaks: non|agon
Pronunciation: /ˈnɒnəɡ(ə)n
 
/

Definition of nonagon in English:

noun

A plane figure with nine straight sides and nine angles.
Example sentences
  • The room is shaped as a large nonagon, its sheer walls, a flat metallic grey, rising almost two stories up and curving into a dome.
  • What's the perimeter of a nonagon whose sides are each twice the length of the side of a square whose area is 16 square units?

Origin

mid 17th century: formed irregularly from Latin nonus 'ninth', on the pattern of words such as hexagon.

Derivatives

nonagonal

1
adjective

Definition of nonagon in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day terpsichorean
Pronunciation: ˌtərpsikəˈrēən
adjective
of or relating to dancing