noun

1. the regular beating in the arteries, caused by the contractions of the heart
2. any beat, signal, vibration, etc. that is regular or rhythmical
3. the perceptible underlying feelings of the public or of a particular group
4. a variation, characterized by a rise, limited duration, and decline, of a quantity whose value normally is constant; specif.,
   1. Elec. a brief surge of voltage or current
   2. Radio a very short burst of electromagnetic waves

Etymology: ME pous < OFr < L pulsus (venarum), beating (of the veins) < pulsus, pp. of pellere, to beat: see felt

intransitive verb pulsed, pulsing puls′·ing

transitive verb

1. to cause to pulsate
2. to drive (an engine, etc.) by pulses
3. Elec. to apply pulses to
4. Radio to modify (an electromagnetic wave) by means of pulses