The Collaborative International Dictionary
Polystome
Polystome \Pol"y*stome\, a. [Gr. ? many-mouthed; poly`s + sto`ma mouth.] (Zo["o]l.) Having many mouths.
Polystome
Polystome \Pol"y*stome\, n. (Zo["o]l.) An animal having many mouths; -- applied to Protozoa.
Wiktionary
polystome
n. (context zoology English) Any animal with many mouths.