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Cestoidea 絳蟲綱 絛蟲綱 Cestoidea \Ces*toid"e*a\ (s[e^]s*toid"[-e]*[.a]), n. pl. [NL.,
gr. Gr. kesto`s girdle -oid.] (Zool.) A class of parasitic worms of the phylum Platyhelminthes (formerly Platelminthes) of which the tapeworms are the most common examples. The body is flattened, and usually but not always long, and composed of numerous joints or segments, each of which may contain a complete set of male and female reproductive organs. They have neither mouth nor intestine. See {Tapeworm}. [Written also {Cestoidea}.] Syn: class Cestoidea, Cestoidea. [1913 Webster]
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