/ Dictionary / Index A Achaemenid: Meaning and Definition of Find definitions for: A•chae•me•nid Pronunciation: (u-kē'mu-nid, u-kem'u-), [key] — pl. A•chae•me•nids, Ach•ae•men•i•dae Ach•ae•men•i•des a member of the dynasty of kings in ancient Persia that ruled from c550 b.c. to 331 b.c. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Achaemenian achalasia Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language