Imperial Aramaic is a linguistic term, coined by modern scholars in order to designate a specific historical variety of Aramaic language. The term is polysemic, with two distinctive meanings, wider (sociolinguistic) and narrower (dialectological). Since most surviving examples of the language have been found in Egypt, the language is also referred to as Egyptian Aramaic.
Some scholars use the term as a designation for a distinctive, socially prominent phase in the history of Aramaic language, that lasted from the middle of the 8th century BCE to the end of the 4th century BCE and was marked by the use of Aramaic as a language of public life and administration in the late Neo-Assyrian Empire and its successor states, the Neo-Babylonian Empire and the Achaemenid Empire, also adding to that some later (Post-Imperial) uses that persisted throughout the early Hellenistic period. Other scholars use the term Imperial Aramaic in a narrower sense, reduced only to the Achaemenid period, basing that reduction on several strictly linguistic distinctions between the previous (Neo-Assyrian and Neo-Babylonian) phase and later (more prominent) Achaemenid phase.