Defn: The ninth segment in insects.

ENNEAD
En"ne*ad, n. Etym: [Gr.

Defn: The number nine or a group of nine. The Enneads, the title given to the works of the philosopher Plotinus, published by his pupil Porphyry; — so called because each of the six books into which it is divided contains nine chapters.

ENNEAGON
En"ne*a*gon, n. Etym: [Gr. ennéagone.] (Geom.)

Defn: A polygon or plane figure with nine sides and nine angles; a nonagon.

ENNEAGONAL
En`ne*ag"o*nal, a. (Geom.)

Defn: Belonging to an enneagon; having nine angles.

ENNEAGYNOUS
En`ne*ag"y*nous, a. Etym: [Gr. (Bot.)

Defn: Having or producing nine pistils or styles; — said of a flower or plant.

ENNEAHEDRAL
En`ne*a*he"dral, a. Etym: [Gr. (Geom.)