A sudden, momentary change in voltage or current from an otherwise steady (or slowly varying) value. (More commonly pulse.)

transferred in reference to various physical things, as fire, wind, sound; also to ‘rolling’ or undulating hills or the like.

Physics and Electronics. A sudden momentary change in the amplitude of an electrical signal from a steady or slowly varying level; = impulse, n. 5.

(a) An electrical pulse of very short duration in which a rapid increase in voltage is followed immediately by a rapid decrease; (b) a burst of…

A voltage pulse.