enneagonal

English

Etymology

enneagon +‎ -al

Adjective

enneagonal (not comparable)

1. (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)

1. nonagonal