Zool. [ad. mod.L. amphistoma, f. Gr. ἀμφί on both sides + στόμα mouth.] A genus of minute parasitic worms, having mouthlike openings at both ends of the body.
1880. Athenæum, 20 Nov., 678/2. The worm (Gastrodiscus Sonsinonis) appears to be an aberrant Amphistome furnished with a singular central disc.
