2 definitions
for Mya
From 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]
From WordNet (r) 2.0 :
Mya
n : type genus of the family Myacidae [syn: genus Mya]