a general term for the freshwater snails: often specifically for the great pond snail (Limnaea stagnalis) and others of that genus. L. truncatula is a host of the liver fluke
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Examples from the Web for pond snail
The pond-snail was swimming with her pointed shell on her back.The Pond|Carl Ewald
The pond-snail (Limnaeus) furnishes, on the other hand, a very beautiful case of distinct ganglia and connecting cords (fig. 59).