'Polyplacophora' definitions:
Definition of 'Polyplacophora'
(from WordNet)
noun
Small class of marine mollusks comprising the chitons; sometimes considered an order of the subclass Amphineura [syn: Polyplacophora, class Polyplacophora]
Definition of 'Polyplacophora'
From: 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]
Definition of 'Polyplacophora'
From: GCIDE
- Polyplacophora \Pol`y*pla*coph"o*ra\, n. pl. [NL. See Poly-, and Placophora.] (Zool.) See Placophora. [1913 Webster]
Definition of 'Polyplacophora'
From: 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]