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]