|Origin:||dynastia, from Greek dynastes 'lord'|
dyn‧a‧sty plural dynasties [countable]
a family of kings or other rulers whose parents, grandparents etc have ruled the country for many years:
The Habsburg dynasty ruled in Austria from 1278 to 1918.
a period of time when a particular family ruled a country or area
a group or family that controls a particular business or organization for a long time:
the Rothschild banking dynasty