plural noun De·mo·spon·gi·ae \-jēˌē\

Definition of Demospongiae

  1. :  a large class of Porifera comprising the majority of living sponges and being characterized by complex structure with a skeleton of tetraxial or simple siliceous spicules or of fibers of spongin or of both

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Origin and Etymology of demospongiae

New Latin, alteration of Desmospongiae

Seen and Heard

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to cast off or become cast off

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