Cy'clo-stō'mā, n.
n. [Gr. κύκλος, circle, and στόμα, mouth.]
Sense 1. (Ichth.) A tribe of cartilaginous fishes, having the mouth surrounded with a large, thick, circular lip.
Sense 2. (Zoöl.) A genus of air-breathing gasteropods, or snails, having the opening in the shell circular.