Webster’s Revised Unabridged Dictionary · 1913
Myzostomata
My′zo·stom′a·ta (mī′zō·stŏm′ȧ·tȧ), n. pl. [NL., fr. Gr. μύζειν to suck + στόμα, -ατος, mouth.] (Zoöl.) 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.