n. pl. dy·nas·ties
1. A succession of rulers from the same family or line.
2. 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·nastic (dī-năstĭk) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.