noun In??do???Ar??y??an \??in-d??-??er-??-??n, -????r-y??n\Definition of INDO-ARYAN1 : a member of one of the peoples of the Indian subcontinent speaking an Indo-European language 2 : one of the early Indo-European invaders of southern Asia 3 : a branch of the Indo-European language family that includes Hindi, Bengali, Punjabi, and other languages spoken primarily in India, Pakistan, Bangladesh, a