Unio

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Unio \U"ni*o\, n. [NL., fr. L. unio unity, union, a single large
     pearl. See {Union}.] (Zool.)
     Any one of numerous species of fresh-water mussels belonging
     to {Unio} and many allied genera.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  Unio
       n : type genus of the family Unionidae [syn: {genus Unio}]