Pronunciation: (âr'ē-un, âr'yun, ar'-),[key] —n. 1. Ethnol.a member or descendant of the prehistoric people who spoke Indo-European.
2. (in Nazi doctrine) a non-Jewish Caucasian, esp. of Nordic stock.
3. (formerly) Indo-European.
4. (formerly) Indo-Iranian.
—adj. 1. of or pertaining to an Aryan or the Aryans.
2. (formerly) Indo-European.
3. (formerly) Indo-Iranian. Also,Arian.