\ ˈyünēˌō \

Definition of unio

1 capitalized : the type genus of the family Unionidae comprising freshwater mussels that have an oblong shell pearly within and covered without by a greenish or blackish epidermis
2 plural unios\ -​ōz \ or unionides\ ˌ⸗⸗ˈänəˌdēz \ : any mussel of Unio or a related genus

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Other Words from unio

unioid \ ˈ⸗⸗ˌȯid \ adjective

History and Etymology for unio

New Latin, from Latin, a large pearl

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Cite this Entry

“Unio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unio. Accessed 14 Jul. 2020.

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