Pulsating

Pulsate \Pul"sate\, v. i. [imp. & p. p. {Pulsated}; p. pr. & vb.
   n. {Pulsating}.] [L. pulsatus, p. p. of pulsare to beat,
   strike, v. intens. fr. pellere to beat, strike, drive. See
   {Pulse} a beating, and cf. {Pulse}, v.]
   To throb, as a pulse; to beat, as the heart.
   [1913 Webster]

         The heart of a viper or frog will continue to pulsate
         long after it is taken from the body.    --E. Darwin.
   [1913 Webster]
    

42 Moby Thesaurus words for "pulsating":
      beating, cadenced, cadent, ceaseless, chattering, constant,
      continual, in numbers, in rhythm, incessant, machine gun, measured,
      metric, oscillating, palpitant, perennial, perpetual, pitapat,
      pulsatile, pulsative, pulsatory, pulsing, rapid, regular, repeated,
      rhythmic, staccato, steady, stuttering, sustained, throbbing,
      unbroken, unceasing, unchanging, unintermitted, unintermittent,
      unintermitting, uninterrupted, unremitting, unstopped, unvarying,
      vibrating