Achaemenid

noun

Achae·​me·​nid ə-ˈkē-mə-nəd 

plural Achaemenids also Achaemenidae ˌa-kə-ˈme-nə-ˌdē 

: a member of the ruling house of ancient Persia generally considered historically important from the assumption of power by Cyrus the Great (559 b.c.) to the overthrow of Darius III (330 b.c.)

Word History

Etymology

borrowed from Latin Achaemenidēs, borrowed from Greek Achaimenídēs, from Achaiménēs (Achaemenes), alleged founder of the dynasty (borrowed from Old Persian Haxāmaniš) + -idēs -id entry 1

First Known Use

1889, in the meaning defined above