英语词汇“impulse”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	impulse
释义	im·pulse I. \ˈimˌpəls also -lts\ noun Etymology: Latin impulsus, from impulsus, past participle of impellere to impel — more at impel 1. a. : the act of driving onward with sudden force : impulsion, thrust, drive, push b. : the effect of an impelling force : motion produced by a sudden or momentary force : impetus < the impulse of the pumping by the heart is carried down so that a finger applied to the artery anywhere near the surface permits a counting of the pulse rate — Morris Fishbein > c. : a wave of excitation transmitted through certain tissues and especially nerve fibers and muscles that results in physiological activity or inhibition d. : an electrical or mechanical action or force usually of brief duration < the impulses received by the radio set are … unimaginably small — A.C.Morrison > specifically : such an action or force actuating an operation (as in a computer) < can be started either by hand or by an air impulse — Swiss Industry & Trade > 2. a. : a force so communicated as to produce motion suddenly or immediately < an impulse of the wind > (1) : the motive force given by the escape wheel in the driving train of a timepiece to the pendulum or balance (2) : the muscular effort initiating a rhythmic dance movement (3) : a short directed motion < written with one impulse of the pen — J.R.Gregg > b. : incentive < under the impulse of transportation profits — American Guide Series: Michigan > c. : an inspiration or motivation especially giving a usually new form or tendency < those who give the religious life a new impulse need disciples to organize the impulse before it runs to seed — Hallam Tennyson > < his more successful stories derive from the same kind of impulse as his poetry — F.R.Leavis > < he received from America fresh artistic impulses — Anatole Chujoy > 3. a. : a sudden spontaneous inclination or an incitement of the mind or spirit arising either directly from feeling or from some outer influence and prompting some usually unpremeditated action < constitutionally inclined to resist impulse and to take long views — George Santayana > < some uncontrollable impulse … may have driven the defendant to the commission of the murderous act — B.N.Cardozo > < act on impulse > also : the force actuated by such a motive or propensity < a man who is driven chiefly by impulse > < impulses of greed — Bertrand Russell > b. : a propensity or natural tendency usually other than rational < a man of good impulses > < the sexual impulse > < the fundamental impulse of self-expression — Havelock Ellis > < the systematizing impulse, the restless passion for order of the Greeks — John Buchan > < never approaches a new task save with the impulse to postpone it — H.A.Overstreet > 4. a. : the product of the average value of a force and the time during which it acts being a quantity equal to the change in momentum produced by the force if the body acted on is free b. : pulse 4a Synonyms: see motive II. \“, ə̇mˈp-\ transitive verb Etymology: Latin impulsus, past participle 1. : to give an impulse to 2. : to initiate an impulse in (a counter of a computer)
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