1. Unio

noun. type genus of the family Unionidae.


  • family Unionidae
  • pearly-shelled mussel
  • genus Unio
  • Unionidae

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Sentences with unio

1. Adjective
Onions originated in Egypt, and upon their arrival in Rome became known as unio**, or large pearl, translating into Middle English as unyon, explains Texas A&M University 12.