The Collaborative International Dictionary of English v.0.48:
Mya \My"a\, prop. n. [L. mya a kind of mussel.] (Zool.) A genus of bivalve mollusks, including the common long, or soft-shelled, clam. [1913 Webster]WordNet (r) 3.0 (2006):
Mya n 1: type genus of the family Myacidae [syn: Mya, genus Mya]