Hy`a*lo*spon"gi*a (?), n. pl. [NL., fr. Gr. glass + a sponge.] Zool.
An order of vitreous sponges, having glassy six-rayed, siliceous spicules; -- called also Hexactinellinae.
© Webster 1913.
Log in or register to write something here or to contact authors.