2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Physa \Phy"sa\, n. [NL., fr Gr ? a bellows.] (Zo["o]l.)
A genus of fresh-water Pulmonifera, having reversed spiral
shells. See {Pond snail}, under {Pond}.
From WordNet r 1.6 [wn]:
physa
n : any member of the genus Physa
more about physa
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