noun Ris·soa \ˈrisəwə, rə̇ˈsōə\

Definition of Rissoa

  1. :  a genus (the type of the family Rissoidae) of small snails that live in brackish water and have an acuminate often finely sculptured shell with a corneous operculum

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Origin and Etymology of rissoa

New Latin, after Giovanni A. Risso †1845 French naturalist

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a brief usually trivial fact

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