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Webster's Dictionary (1865)

Păl'ū-dī'nă, n.

noun

n. [Fr. paludine, fr. Lat. palus, paludis, a marsh, pool.] (Zool.) A genus of fresh-water snails. Mantell.

An illustration of a coiled freshwater snail shell with its opening visible.
Paludina vivi- para.