Wiktionary
a. relating to the dynasty which ruled the Persian empire c. 550–330 BCE (the Achaemenid Empire), founded by Achaemenes n. a member of the dynasty which ruled the Persian empire c. 550–330 BCE (the Achaemenid Empire)
Wikipedia
Usage examples of "achaemenid".
The southwest corner of Anshan contains the Persian highlands, whose clan leader was Cyrus the Achaemenid, hereditary lord of Anshan.
No larger than I, she was like a fragile doll on whose neck had been set, most incongruously, the large head of Cyrus, the curve to whose Achaemenid nose so resembled that of a rooster I had got to know in our courtyard that I almost expected to see nostrils like slits set atop the bridge.
The Achaemenid court has never been a place without surprises, usually unpleasant.
They would rather be ruled by the Achaemenid at Susa than by a local king.
But after the court of the Achaemenid, that of Magadha was provincial, to say the least.
Also, whenever possible, the Achaemenid tries to leave at least the semblance of power to the old ruling houses.
That term was a Greek bastardization of the Persian province of Fars, the homeland of the old Achaemenid dynasty.
Because of an estrangement of the priesthood from the king, however, the monarchy was severely weakened, and it was unable to withstand the rising power of Achaemenid Iran.
Finally, according to the Achaemenid Milieu office, autumn 542 happened to be the first season of relative tranquility since the disappearance.
They are probably an inheritance from the Median kings, whom the Achaemenids imitate in so many things.
But he had tried to supplant the Achaemenids, and Amestris was in a towering rage.
The flow of Iranians into Iraq, which began during the rein of the Achaemenids, initiated an important demographic trend that would continue intermittently throughout much of Iraqi history.
Alexander quickly won Babylonian favor when, unlike the Achaemenids, he displayed respect for such Babylonian traditions as the worship of their chief god, Marduk.
He was the last king of the Achaemenids, losing his empire to Alexander the Great.
The highways of the Achaemenids -- yes, and which before them had trembled to the tramplings of the myriads of the godlike Dravidian conquerors.