'Mesozoa' definitions:

Definition of 'Mesozoa'

From: GCIDE
  • Mesozoa \Mes`o*zo"a\, n. pl. [NL. See Mesozoic.] (Zool.) A group of very lowly organized, wormlike parasites, including the Dicyemata. They are found in cephalopods. See Dicyemata. [1913 Webster]