Myzostomata \My`zo*stom"a*ta\, prop. n. pl. [NL., fr. Gr.
my`zein to suck + sto`ma, -atos, mouth.] (Zool.)
An order of curious parasitic worms found on crinoids. The
body is short and disklike, with four pairs of suckers and
five pairs of hook-bearing parapodia on the under side.
[1913 Webster]