Silicoidea

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Silicoidea \Sil`i*coi"de*a\, n. pl. [NL. See {Silex}, and
     {-oid}.] (Zool.)
     An extensive order of Porifera, which includes those that
     have the skeleton composed mainly of siliceous fibers or
     spicules.
     [1913 Webster]