Definitions for unio
Unio, genus Unio(noun)
type genus of the family Unionidae
Any of the genus Unio of freshwater mussels.
Origin: From the genus name.
any one of numerous species of fresh-water mussels belonging to Unio and many allied genera
Unio is a genus of medium-sized freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels.
Unio is the type genus of the family Unionidae.
U.S. National Library of Medicine
A genus of freshwater mussels in the family UNIONIDAE, class BIVALVIA.
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