rhythmical accent

from The Collaborative International Dictionary of English v.0.48

Rhythmic \Rhyth"mic\ (-m[i^]k), Rhythmical \Rhyth"mic*al\
   (-m[i^]*kal), a. [Gr. ????: cf. L. rhythmicus, F.
   rhythmique.]
   Pertaining to, or of the nature of, rhythm
   [1913 Webster]

         Day and night
         I worked my rhythmic thought.            --Mrs.
                                                  Browning.
   [1913 Webster]

   {Rhythmical accent}. (Mus.) See {Accent}, n., 6
   (c) .
       [1913 Webster]