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English definition of “frequency”

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frequency

noun uk   /ˈfriː.kwən.si/ us  

frequency noun (HAPPENING)

[C or U] the number of times something happens within a particular period, or the fact of something happening often or a large number or times: Complaints about the frequency of trains rose by 201 percent in the last year. the increasing frequency of terrorist attacks It's not the duration of his absences from work so much as the frequency that worries me.

frequency noun (LIGHT/SOUND/RADIO)

[U] specialized physics the number of times that a wave, especially a light, sound, or radio wave, is produced within a particular period, especially one second: the frequency of light low frequency radiation The human ear cannot hear very high-frequency sounds. [C] specialized media a particular number of radio waves produced in a second at which a radio signal is broadcast: Do you know what frequency the BBC World Service is on?
(Definition of frequency from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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