"Aryan" may have had a meaning 3500 years ago referring to the Indo-Iranian invaders of India and parts of the Middle East, but I don't think it is used any longer by serious scholars studying racial and ethnic groups. The Nazis tainted the word--that's why the late Martin Bernal (in Black Athena) labeled the viewpoint he was arguing against "the Aryan model" (because he didn't have the facts to bolster his own point of view). He was a hardline leftist so used their typical tactic of namecalling.
Yeah, I know the Nazis perverted the word. In fact the bitter irony is that many Ashkenazi Jews may have descended from Turkic Khazars, a medieval Caucasian kingdom that converted to Judaism, and were more Aryan than the Germans were.