"Aryan" is a word in ENGLISH

One of a primitive people supposed to have lived in
prehistoric times, in Central Asia, east of the Caspian Sea, and north
of the Hindoo Koosh and Paropamisan Mountains, and to have been the
stock from which sprang the Hindoo, Persian, Greek, Latin, Celtic,
Teutonic, Slavonic, and other races; one of that ethnological division
of mankind called also Indo-European or Indo-Germanic.

Of or pertaining to the people called Aryans; Indo-European;
Indo-Germanic; as, the Aryan stock, the Aryan languages.

The language of the original Aryans.