Not sure, Jackie, but something is wrong with your account.

(Bactrian: αρια, arya) ... Bactrian was natively known as αρια or "Arya" language.

Anyway, yes Arya is an Indo-Iranian term (Sanskrit, Old Persian/Avestan). It's an ethnonym, but suffered from misuse in the last century by some Germans and other folks. Some more from Wikipedia:
Quote:
Bactria (from Βακτριανή, the Hellenized version of Old Persian Bāxtri; Bactrian: Baktra; Persian/Pashto: باختر Bākhtar; Tajik: Бохтар; Chinese: 大夏 Dxi) is the ancient name of a historical region located south of the Amu Darya and west of Gandhara.

Ceci n'est pas un seing.