ἑπταχῇ

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

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Parsed as:

masculine dative singular
✓ feminine dative singular
neuter dative singular of ἑπτάχορδος