Where does “ատ-” come from?

ատ- (Old Armenian) comes from Old Armenian -եան, from Proto-Indo-European -iyn̥.

Ancestry of “ատ-”, step by step

StepLanguageWordMeaning
1Old Armenian-եանforming belonging/affiliation adjectives; forming...
2Proto-Indo-European-iyn̥—

Words derived from “ատ-”

Every word from Proto-Indo-European -iyn̥ →Every word from Old Armenian -եան →
ատ- — Etymology, Origin & Word History | Etymology Explorer