dipodies

from The Collaborative International Dictionary of English v.0.48

Dipody \Dip"o*dy\, n.; pl. {Dipodies}. [Gr. ?, fr. ? two-footed;
   di- = di`s- twice + ?, ?, foot.] (Pros.)
   Two metrical feet taken together, or included in one measure.
   --Hadley.
   [1913 Webster]

         Trochaic, iambic, and anapestic verses . . . are
         measured by dipodies.                    --W. W.
                                                  Goodwin.
   [1913 Webster]