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nonagon

Pronunciation: /ˈnɒnəg(ə)n/
Definition of nonagon

noun

  • a plane figure with nine straight sides and nine angles.

Derivatives

nonagonal

adjective

Origin:

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

nonagon in other Oxford dictionaries

Definition of nonagon in the US English dictionary

Nearby words

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