Found 2 items, similar to Unio.
English → English (WordNet) Definition: Unio Unio n : type genus of the family Unionidae [syn: genus Unio]
English → English (gcide) Definition: Unio Unio \U"ni*o\, n. [NL., fr. L. unio unity, union, a single large pearl. See Union.] (Zo["o]l.) Any one of numerous species of fresh-water mussels belonging to Unio and many allied genera. [1913 Webster]