/air"ee euhn, air"yeuhn, ar"-/ , 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.
5. of or pertaining to an Aryan or the Aryans.
6. (formerly) Indo-European.
7. (formerly) Indo-Iranian.
Also, Arian .
[ 1785-95; arya of high rank (adj.), aristocrat (n.) + -AN ]