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Webster 1913 Edition

Nonagon

Non′a-gon

,

Noun.

[L.

nonus

ninth + Gr. [GREEK] angle.]

(Math.)

A plane figure or polygon having nine sides and nine angles.

Webster 1828 Edition

Nonagon

NONAGON

,

Noun.

[L. Nine, and Gr. an angle.] A figure having nine sides and nine angles.