\Pla*coph"o*ra\, n. pl. [NL., from Gr. ?, ?, tablet +
? to bear.] (Zo["o]l.)
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}.