\Mol`lus*coi"de*a\, n. pl. [NL. See {Mollusk}, and
{-oid}.] (Zo["o]l.)
A division of Invertebrata which includes the classes
Brachiopoda and Bryozoa; -- called also {Anthoid Mollusca}.
Note: Originally the Tunicata were included under
      Molluscoidea, from which they are known to differ
      widely in structure and embryology. Molluscoidea were
      formerly considered a subdivision of Mollusca, but they
      are now known to have more relationship with Annelida
      than with Mollusca.