impulse - definition in the American English Dictionary - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “impulse”

See all translations

impulse

noun

impulse noun (DESIRE)

 us   /ˈɪm·pʌls/ [C/U] a sudden, strong desire to do something: [+ to infinitive] I had this impulse to dye my hair red.  us   /ˈɪm·pʌls/ [C/U] If you do something on impulse, you do it because you suddenly want to: [U] I bought this expensive sweater on impulse.

impulse noun (SIGNAL)

 us   /ˈɪm·pʌls/ [C] a short electrical signal that carries information or instructions between the parts of a system: nerve impulses

impulse noun (FORCE)

physics /ˈɪm·pʌls/ [U] the force that is working on an object multiplied by the amount of time it is working
(Definition of impulse from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of impulse?
Add Cambridge dictionaries to your browser to your website

Definitions of “impulse” in other dictionaries

Word of the Day

intellectualize

to think about or discuss a subject in a detailed and intellectual way, without involving your emotions or feelings

Word of the Day

What’s All The Commotion About? (Words to describe sounds)

by Kate Woodford,
May 20, 2015
​​​ In this post we look at a range of words and phrases that we use to describe noise and the absence of noise. Starting with complete quiet, we sometimes use the noun hush to describe silence: A hush fell over the room as the bride walked in./There was a deathly hush (=complete

Read More 

plyscraper noun

May 18, 2015
a skyscraper made mainly from wood The development of engineered timber could herald a new era of eco-friendly ‘plyscrapers’. Christchurch welcomed its first multistorey timber structure this year, there are plans for Vancouver, and the talk is China could follow

Read More