1》 the rhythmical throbbing of the arteries as blood is propelled through them.
↘each successive throb of the arteries or heart.
2》 a single vibration or short burst of sound, electric current, light, or other wave.
3》 a musical beat or other regular rhythm.
4》 the centre of activity in an area or field: those close to the financial and economic ~.
5》 Biochemistry a measured amount of an isotopic label given to a culture of cells.
2》 modulate (a wave or beam) so that it becomes a series of ~s.
3》 apply a ~d signal to (a device).
ME: from L. pulsus 'beating', from pellere 'to drive, beat'.
■ noun the edible seeds of various leguminous plants, e.g. lentils.
↘a plant producing such seeds.
ME: from OFr. pols , from L. puls 'porridge of meal or ~'; related to pollen .