Middle Persian
noun
the Persian language at a stage that begins c300 b.c. and includes Pahlavi (attested from the 3rd to the 7th centuries a.d.) as well as the West Iranian literatures (3rd–10th centuries a.d.) of religions carried outside Persia. Abbreviation: MPers
British Dictionary definitions for middle persian
Middle Persian
noun
the classical form of modern Persian, spoken from about 300 ad to about 900
See also Pahlavi 2