Webster’s Revised Unabridged Dictionary · 1913
Emydea
E·myd′e·a (ē·mĭd′ē·ȧ), n. pl. [NL., fr. Emys a genus of tortoises, L. emys a kind of fresh-water tortoise, Gr. ἐμύς.] (Zoöl.) A group of chelonians which comprises many species of fresh-water tortoises and terrapins.