pulse

¹

[ puhls ]

noun

1. the regular throbbing of the arteries, caused by the successive contractions of the heart, especially as may be felt at an artery, as at the wrist.
2. a single pulsation, or beat or throb, of the arteries or heart.
3. the rhythmic recurrence of strokes, vibrations, or undulations.
4. a single stroke, vibration, or undulation.
5. Electricity. a momentary, sudden fluctuation in an electrical quantity, as in voltage or current.
6. Physics. a single, abrupt emission of particles or radiation.
7. a throb of life, emotion, etc.
8. vitality.
9. the general attitude, sentiment, preference, etc., as of the public.

verb (used without object)

, pulsed, puls·ing.

1. to beat or throb; pulsate.
2. to beat, vibrate, or undulate.
3. Physics. to emit particles or radiation periodically in short bursts.

verb (used with object)

, pulsed, puls·ing.

1. to cause to pulse.
2. Medicine/Medical. to administer (medication) in interrupted, often concentrated dosages to avoid unwanted side effects.

pulse

²

[ puhls ]

noun

1. the edible seeds of certain leguminous plants, as peas, beans, or lentils.
2. a plant producing such seeds.

pulse

¹

/ pʌls /

noun

1. the edible seeds of any of several leguminous plants, such as peas, beans, and lentils
2. the plant producing any of these seeds

pulse

²

/ pʌls /

noun

1. physiol
   1. the rhythmic contraction and expansion of an artery at each beat of the heart, often discernible to the touch at points such as the wrists
   2. a single pulsation of the heart or arteries
2. physics electronics
   1. a transient sharp change in voltage, current, or some other quantity normally constant in a system
   2. one of a series of such transient disturbances, usually recurring at regular intervals and having a characteristic geometric shape
   3. ( as modifier ) Less common nameimpulse

      a pulse generator

3. 1. a recurrent rhythmic series of beats, waves, vibrations, etc
   2. any single beat, wave, etc, in such a series
4. bustle, vitality, or excitement

   the pulse of a city

5. the feelings or thoughts of a group or society as they can be measured

   the pulse of the voters

6. keep one's finger on the pulse
   to be well-informed about current events

verb

1. intr to beat, throb, or vibrate
2. tr to provide an electronic pulse to operate (a slide projector)

pulse

/ pŭls /

1. The rhythmic expansion and contraction of the arteries as blood is pumped through them by the heart. The pulse can be felt at several parts of the body, as over the carotid and radial arteries.
2. A dose of a medication or other substance given over a short period of time, usually repetitively.
3. 1. A brief sudden change in a normally constant quantity, such as an electric current or field.
   2. Any of a series of intermittent occurrences characterized by a brief sudden change in a quantity.

Derived Forms

• ˈpulseless, adjective

Other Words From

• un·pulsing adjective

Word History and Origins

Origin of pulse¹

First recorded in 1350–1400; Middle English pous(e), puls(e), from Old French pous, pulse, and Latin pulsus “a beat, stroke, throb,” noun use of past participle of pellere “to push, drive, strike”

Origin of pulse²

First recorded in 1250–1300; Middle English puls, pols, from Old French pous, pouls, pols, from Latin puls “porridge; thick pap of meal”; poultice

Word History and Origins

Origin of pulse¹

C13 pols, from Old French, from Latin puls pottage of pulse

Origin of pulse²

C14 pous, from Latin pulsus a beating, from pellere to beat

Idioms and Phrases

see take the pulse of .

Example Sentences

Central to this innovation is the ytterbium thin-disk laser, which produces high-power, femtosecond pulses at megahertz repetition rates.

From Science Daily

The team hoped to use the light pulses to prevent the bursts by switching off neurons that contained light-sensitive proteins.

From Science Daily

A theoretical astrophysicist from the University of Kansas may have solved a nearly two-decade-old mystery over the origins of an unusual "zebra" pattern seen in high-frequency radio pulses from the Crab Nebula.

From Science Daily

Those pulses passed through transceivers, encountered the sandpapers, then rebounded back through the system for analysis by the team's learning model.

From Science Daily

However, medics in the intensive care unit were then unable to find a pulse, and Mrs Savage was pronounced dead in the early hours of the morning.

From BBC

Related Words

• vibration