'Hexactinelline' definitions:

Definition of 'Hexactinelline'

From: GCIDE

Hexactinelline \Hex*ac`ti*nel"line\, a. [From NL. Hexactinellin[ae], fr. Gr. "e`x six + a dim. of ?, ?, a ray.] (Zool.) Belonging to the Hexactinellin[ae], a group of sponges, having six-rayed siliceous spicules. [1913 Webster]