Lymnaea
noun
Lym·naea
| \ lim-ˈnē-ə, ˈlim-nē-ə
\
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Medical Definition of Lymnaea
: a genus of snails formerly almost coextensive with the family Lymnaeidae but now comprising comparatively few species of dextrally coiled freshwater snails that include some medically important intermediate hosts of flukes — compare fossaria, galba