προπαροξυτόνησις → proparoxytonesis, accentuation on the antepenultimate syllable, making a word προπαροξύτονος
καὶ ἔστι πως Ἀττικὴ καὶ ἡ Ἄθοω προπαροξυτόνησις → and, by the way, there's the Attic proparoxytonesis, as well as that of Athos (Eustathius [12th cent.],
Iliad commentary 3.625.1)
Why is ἡ γάλοως proparoxytone? - Textkit Greek and Latin Forums