the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having six rays (3)
(a) n. = oxyhexaster n.; (b) adj. (of a sponge spicule) having six pointed rays radiating from a single point.
(a) adj. having six rays, as a sponge-spicule; (b) n. a sponge-spicule having six rays.