Where does “abadia” come from?

abadia (Old Occitan) comes from Late Latin abbatia, from Latin abbās, from Ancient Greek ἀββᾶς, from Ancient Greek ἀββα, from Aramaic אבא, from Proto-Semitic ʔabw-, from Proto-Afroasiatic ʔab- — father.

abadia (Old Occitan): abbey