enneagonal

English

Etymology

enneagon +‎ -al

Adjective

enneagonal (not comparable)

(geometry) In the form of an enneagon; having nine angles.
enneagonal angle

References

“enneagonal”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

Catalan

Etymology

From enneàgon +‎ -al.

Adjective

enneagonal m or f (masculine and feminine plural enneagonals)

nonagonal

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