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impulse

[ im-puhls ]

noun

  1. the influence of a particular feeling, mental state, etc.:

    to act under a generous impulse; to strike out at someone from an angry impulse.

  2. sudden, involuntary inclination prompting to action:

    to be swayed by impulse.

  3. an instance of this.
  4. a psychic drive or instinctual urge.
  5. an impelling action or force, driving onward or inducing motion.
  6. the effect of an impelling force; motion induced; impetus given.
  7. Physiology. a progressive wave of excitation over a nerve or muscle fiber, having either a stimulating or inhibitory effect.
  8. Mechanics. the product of the average force acting upon a body and the time during which it acts, equivalent to the change in the momentum of the body produced by such a force.
  9. Electricity. a single, usually sudden, flow of current in one direction.


adjective

  1. marked by or acting on impulse:

    an impulse buyer.

  2. bought or acquired on impulse:

    To reduce expenses, shun impulse items when shopping.

impulse

/ ˈɪ³¾±èÊŒ±ô²õ /

noun

  1. an impelling force or motion; thrust; impetus
  2. a sudden desire, whim, or inclination

    I bought it on an impulse

  3. an instinctive drive; urge
  4. tendency; current; trend
  5. physics
    1. the product of the average magnitude of a force acting on a body and the time for which it acts
    2. the change in the momentum of a body as a result of a force acting upon it for a short period of time
  6. physiol See nerve impulse
  7. electronics a less common word for pulse 1
  8. on impulse
    spontaneously or impulsively
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

impulse

/ Ä­³¾â€²±èÅ­±ô²õ′ /

  1. A sudden flow of electrical current in one direction.
  2. An electrical signal traveling along the axon of a neuron. Nerve impulses excite or inhibit activity in other neurons or in the tissues of the body, such as muscles and glands.
  3. The change of momentum of a body or physical system over a time interval in classical mechanics, equal to the force applied times the length of the time interval over which it is applied.
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˜yÐÄvlog History and Origins

Origin of impulse1

First recorded in 1640–50; from Latin impulsus “incitement, pressure,†noun use of past participle of impellere “to strike against, set in motionâ€; impel
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˜yÐÄvlog History and Origins

Origin of impulse1

C17: from Latin impulsus a pushing against, incitement, from impellere to strike against; see impel
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Example Sentences

Examples have not been reviewed.

Thank goodness this was at a Starbucks, where several people watched, because I was shocked by his aggressive impulse.

From

And then there's the crazy feud with Canada which seems to stem from the same impulse as the Greenland obsession.

From

“I know that I'm an overspender, so I try to put intentional barriers in my way to prevent impulse purchases,†she said.

From

Markets crave consistency, while Trump thrives on impulse — a recipe for a roller-coaster investment ride.

From

“Greene’s attempts to defund PBS and NPR are the worst form of censorship," she continued, "reflecting both her own ignorance and the Republican party’s authoritarian impulses.â€

From

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