A succession of rulers from the same family or line.
A family or group that maintains power for several generations: a political dynasty controlling the state.
[Middle English dynastie, from Old French, from Late Latin dynastīa, lordship, from Greek dunasteia, from dunastēs, lord; see dynast.] dy·nas'tic (dī-nās'tĭk) adj., dy·nas'ti·cal·ly adv.