Definify.com
Webster 1913 Edition
Potamian
Po-ta′mi-an
,Noun.
[Gr. [GREEK] 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
.