A·chae·me·nid 
(ə-kēmə-nĭd, -kĕmə-) also A·chae·me·ni·an (ăk′ə-mēnē-ən)
(ə-kēmə-nĭd, -kĕmə-) also A·chae·me·ni·an (ăk′ə-mēnē-ən)adj.
Of or relating to the dynasty that ruled the Persian Empire.
n.
A member or subject of this dynasty.
[After Achaemenes, legendary ancestor of Cyrus II, founder of the dynasty.]