ἀερήϊον

Alas! Could not find the search term ἀερήϊον.
Found the closest form ἀερία. Other nearby forms can be found in the wordwheel, or perhaps try searching again without accents.

Morpho works with a static database. If you like, you can compare the output of Morpheus.

Parsed as:

feminine nominative singular
feminine vocative singular of ἀέριος