τετράαχμον

Alas! Could not find the search term τετράαχμον.
Found the closest form τετραάρχης. 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:

✓ masculine nominative singular of τετράρχης