Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of silicea is as below...

Silicea :: Silicea (n. pl.) Same as Silicoidea.

Porifera :: Porifera (n. pl.) A grand division of the Invertebrata, including the sponges; -- called also Spongiae, Spongida, and Spongiozoa. The principal divisions are Calcispongiae, Keratosa or Fibrospongiae, and Silicea..

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