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4 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Isopleura \I`so*pleu"ra\, n. pl. [NL. See {Iso-}, and {Pleura}.] (Zool.) A subclass of Gastropoda, in which the body is symmetrical, the right and left sides being equal. [1913 Webster] Note: The intestine terminates at the posterior end of the body, and the gills and circulatory and reproductive organs are paired. It includes the chitons ({Polyplacophora}), together with {Neomenia} and {Ch[ae]toderma}, which are wormlike forms without a shell. [1913 Webster] From The Collaborative International Dictionary of English v.0.48 [gcide]: Placophora \Pla*coph"o*ra\ (pl[.a]*k[o^]f"[-o]*r[.a]), n. pl. [NL., from Gr. pla`x, plako`s, tablet + fe`rein to bear.] (Zool.) A division of gastropod Mollusca, including the chitons. The back is covered by eight shelly plates. Called also {Polyplacophora}. See Illust. under {Chiton}, and {Isopleura}. [1913 Webster] From The Collaborative International Dictionary of English v.0.48 [gcide]: Polyplacophora \Pol`y*pla*coph"o*ra\, n. pl. [NL. See {Poly-}, and {Placophora}.] (Zool.) See {Placophora}. [1913 Webster] From WordNet (r) 2.0 [wn]: Polyplacophora n : small class of marine mollusks comprising the chitons; sometimes considered an order of the subclass Amphineura [syn: {class Polyplacophora}]
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