Definitions for unio
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Princeton's WordNet
Unio, genus Unio(noun)
type genus of the family Unionidae
Wiktionary
unio(Noun)
Any of the genus Unio of freshwater mussels.
Origin: From the genus name.
Webster Dictionary
Unio(noun)
any one of numerous species of fresh-water mussels belonging to Unio and many allied genera
U.S. National Library of Medicine
Unio
A genus of freshwater mussels in the family UNIONIDAE, class BIVALVIA.
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