Te*trac`ti*nel"li*da (?), n. pl. [NL., from Gr. tetraxcf; + , , ray, spoke.] Zool.
A division of Spongiae in which the spicules are siliceous and have four branches diverging at right angles. Called also Tetractinellinae.
© Webster 1913.
Log in or registerto write something here or to contact authors.
Need help? firstname.lastname@example.org