The Collaborative International Dictionary of English v.0.48:

Systaltic \Sys*tal"tic\, a. [L. systalticus drawing together,
   Gr. ?, from ? to draw together. Cf. Sustaltic, Systole.]
   (Physiol.)
   Capable of, or taking place by, alternate contraction and
   dilatation; as, the systaltic action of the heart.
   [1913 Webster]