physa

2 definitions found

physa - Collaborative International Dictionary of English v.0.48 :

  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]

physa - WordNet (r) 2.1 (2005) :

  physa
      n 1: any member of the genus Physa