A division of trematode worms having even more two suckers. Called in addition Polystomea and Polystoma.
The sponges or Porifera, as metazoie organisms contrasted with all other Metazoa, or Monostomata: so called from their particular many mouths or oscula.—.
In Saville Kent's system of category, one of four chapters of Protozoa, composed of the suctorial or tentaculiferous animalcules, and/or acinetiform infusorians, having many tentacular organs, all of which functions as a tubular sucking-mouth: contrasted with Eustomata, Discostomata, and Pantostomata. The group is oftener called Tentaculifera.