(c.550–486 BC), king of Persia 521–486 BC; known as Darius the Great. After a revolt by the Greek cities in Ionia (499–494 BC) he invaded Greece but was defeated at Marathon (490 BC).
Definition of Darius I in US English:
Darius I
proper noundəˈrīəs
(c.550–486 BC), king of Persia 521–486 BC; known as Darius the Great. After a revolt by the Greek cities in Ionia (499–494 BC) he invaded Greece but was defeated at Marathon (490 BC).