Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of polyplacophora is as below...

Chiton :: Chiton (n.) One of a group of gastropod mollusks, with a shell composed of eight movable dorsal plates. See Polyplacophora..

Placophora :: Placophora (n. pl.) 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..

Polyplacophora :: Polyplacophora (n. pl.) See Placophora.

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