Designating or relating to a word in ancient Greek having an acute accent on the antepenultimate syllable. Also in extended use: designating or relating to a word in another language having the stress on that syllable.
A proparoxytone word.
Mid 18th century; earliest use found in William Primatt (d. 1770). From post-classical Latin proparoxytonus or its etymon Hellenistic Greek προπαροξύτονος having an acute accent on the antepenultimate syllable from ancient Greek προ- + Byzantine Greek παροξύτονος (although this is first attested later).