Pertaining to rhythm in art, or to a succession of measures marked by regularly recurrent accents, beats, or pulses; noting any succession so marked; hence, musical, metrical, or poetic: as, the rhythmical movement of marching or of a dance.

In physics and physiology, pertaining to or constituting a succession of alternate and opposite or correlative states.

In medicine, periodical.

In the graphic and plastic arts, properly proportioned or balanced.

adjective. rhythmic

adjective. recurring with measured regularity

"Three men rose and dipped, rose and dipped, in rhythmical precision; but a red bandanna, wrapped about the head of one, caught and held his eye."

rhythmical signature  

Sapphic  adonic  cadenced  cadent  chantlike  

ceaseless  continuous  deft  figurative  guttural  

alternate  antispastic  beating  cadenced  cadent