| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024pulse1 /pʌls/USA pronunciation n., v., pulsed, puls•ing. n. [countable] - Physiologythe regular beat or throbbing of the arteries, caused by the successive contractions of the heart:The doctor felt his wrist for a pulse.
- a stroke, vibration, or regular series of beats:a pulse of drums.
- the general feelings, opinions, attitudes, or sentiments, as of the public.
- Electricitya momentary, sudden surge or drop in an electrical quantity.
- Physicsa single, sudden emission of particles or radiation.
v. [no object] - to beat or throb;
pulsate:The blood pulsed through his veins.
See -puls-. WordReference Random House Unabridged Dictionary of American English © 2024pulse1 (puls),USA pronunciation n., v., pulsed, puls•ing. n. - Physiologythe regular throbbing of the arteries, caused by the successive contractions of the heart, esp. as may be felt at an artery, as at the wrist.
- Physiologya single pulsation, or beat or throb, of the arteries or heart.
- the rhythmic recurrence of strokes, vibrations, or undulations.
- a single stroke, vibration, or undulation.
- Electricitya momentary, sudden fluctuation in an electrical quantity, as in voltage or current.
- Physicsa single, abrupt emission of particles or radiation.
- a throb of life, emotion, etc.
- vitality.
- the general attitude, sentiment, preference, etc., as of the public.
v.i. - to beat or throb;
pulsate. - to beat, vibrate, or undulate.
- Physicsto emit particles or radiation periodically in short bursts.
v.t. - to cause to pulse.
- Medicineto administer (medication) in interrupted, often concentrated dosages to avoid unwanted side effects.
- Latin, as above
- Middle French
- s and backing and raising of e before velar l; replacing Middle English pous
- Latin pulsus a beat, equivalent. to *peld-, base of pellere to set in motion by beating or striking (compare impel) + -tus, suffix of verb, verbal action, with dt
- 1300–50
- Plant Biologythe edible seeds of certain leguminous plants, as peas, beans, or lentils.
- Plant Biologya plant producing such seeds.
- Latin: thick pap of meal, pulse. See poultice
- Middle English puls 1250–1300
Collins Concise English Dictionary © HarperCollins Publishers:: pulse /pʌls/ n - 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
- a single pulsation of the heart or arteries
- a transient sharp change in voltage, current, or some other quantity normally constant in a system
- one of a series of such transient disturbances, usually recurring at regular intervals and having a characteristic geometric shape
- a recurrent rhythmic series of beats, waves, vibrations, etc
- any single beat, wave, etc, in such a series
- bustle, vitality, or excitement: the pulse of a city
- keep one's finger on the pulse ⇒ to be well-informed about current events
vb - (intransitive) to beat, throb, or vibrate
- (transitive) to provide an electronic pulse to operate (a slide projector)
Etymology: 14th Century pous, from Latin pulsus a beating, from pellere to beatˈpulseless adj pulse /pʌls/ n - the edible seeds of any of several leguminous plants, such as peas, beans, and lentils
- the plant producing any of these seeds
Etymology: 13th Century pols, from Old French, from Latin puls pottage of pulse |