The DICT Development Group

  Gasteropoda \Gas`te*rop`o*da\, n. pl. (Zool.)
     Same as Gastropoda.
     [1913 Webster]

  Gastropoda \Gas*trop"o*da\, n. pl., [NL., fr. Gr. ?, ?, stomach
     + -poda.] (Zool.)
     One of the classes of Mollusca, of great extent. It includes
     most of the marine spiral shells, and the land and
     fresh-water snails. They generally creep by means of a flat,
     muscular disk, or foot, on the ventral side of the body. The
     head usually bears one or two pairs of tentacles. See
     Mollusca. [Written also Gasteropoda.]
     [1913 Webster]
  
     Note: The Gastropoda are divided into three subclasses; viz.:
           ({a) The Streptoneura or Dioecia, including the
           Pectinibranchiata, Rhipidoglossa, Docoglossa, and
           Heteropoda. ({b) The Euthyneura, including the
           Pulmonata and Opisthobranchia. ({c) The Amphineura,
           including the Polyplacophora and Aplacophora.
           [1913 Webster]

  Gasteropoda
      n 1: snails and slugs and their relatives [syn: Gastropoda,
           class Gastropoda, Gasteropoda, class Gasteropoda]