a. [ L. systalticus drawing together, Gr. &unr_;, from &unr_; 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 ]
{ } a. [ Cf. G. &unr_; putting together. See Syntax. ] Of or pertaining to syntax; according to the rules of syntax, or construction. -- Syn*tac"tic*al*ly, adv. [1913 Webster]