Could not find αἰθρίου in Logeion dictionaries.
αἰθρίου
Noun: neuter genitive singular of
αἴθριον
αἰθρίου
Adjective: masculine genitive singular, Adjective: feminine genitive singular, Adjective: neuter genitive singular of
αἴθριος
See αἰθρίου in Morpho