The Collaborative International Dictionary of English v.0.48:
Dynastic \Dy*nas"tic\, a. [Gr. ? of a dynast, fr. ?: cf. F. dunastique.] Of or relating to a dynasty or line of kings. --Motley. [1913 Webster]WordNet (r) 3.0 (2006):
dynastic adj 1: of or relating to or characteristic of a dynasty