Definition that contains spicule
- solenogaster deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle
- class hyalospongiae sponges with siliceous spicules that have six rays; choanocytes are restricted to finger-shaped chambers
- glass sponge a siliceous sponge (with glassy spicules) of the class Hyalospongiae
- hyalospongiae sponges with siliceous spicules that have six rays; choanocytes are restricted to finger-shaped chambers
- aplacophoran deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle