perispomenon

from The Collaborative International Dictionary of English v.0.48

Perispomenon \Per`i*spom"e*non\, n.; pl. {Perispomena}. [NL.,
   from Gr. ?, pr. pass. p. of ? to draw around, to circumflex;
   peri` around + ? to draw.] (Gr. Gram.)
   A word which has the circumflex accent on the last syllable.
   --Goodwin.
   [1913 Webster]