The name Syria is Latinized from the Greek Συρία. Herodotus used it loosely to refer to Cappadocia (Pipes 1992). In Greek usage, Syria and Assyria were used almost interchangeably, but in the Roman Empire, Syria and Assyria came to be used as distinct geographical terms. "Syria" in the Roman Empire period referred to "those parts of the Empire situated between Asia Minor and Egypt", i.e. the western Levant, while "Assyria" was part of the Persian Empire, and only very briefly came under Roman control (116-118 AD, marking the historical peak of Roman expansion), where it was known as Assyria Provincia.
Sursă: Wikipedia engleză