pulsing pulsing /ˈpʌlsɪŋ/

noun

1. (electronics) a sharp transient wave in the normal electrical state (or a series of such transients)  ( pulsing , impulse , pulsation , pulse )
   (electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
    The pulsations seemed to be coming from a star
   the pulsations seemed to be coming from a star