'Potamian' definitions:

Definition of 'Potamian'

From: GCIDE

Potamian \Po*ta"mi*an\, n. [Gr. ? river.] (Zool.) A river tortoise; one of a group of tortoises (Potamites, or Trionychoidea) having a soft shell, webbed feet, and a sharp beak. See Trionyx. [1913 Webster]