proparoxytone

from WordNet (r) 3.0 (2006)

proparoxytone
    n 1: word having stress or acute accent on the antepenult

from The Collaborative International Dictionary of English v.0.48

Proparoxytone \Pro`par*ox"y*tone\, n. [Gr. ?. See {Pro-}, and
   {Paroxytone}.] (Gr. Gram.)
   A word which has the acute accent on the antepenult.
   [1913 Webster]