Physa

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Physa \Phy"sa\, prop. n. [NL., fr. Gr. fy^sa a bellows.] (Zool.)
     A genus of fresh-water Pulmonifera, having reversed spiral
     shells. See {Pond snail}, under {Pond}.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:



  physa
       n : any member of the genus Physa