frequency

noun
B2
1
B2
the rate at which something happens or is repeated
تکرار, فرکانس
2
B2
the fact of something happening often
فراوانی, تناوب, شدت وقوع, میزان بروز
the alarming frequency of computer errors
The relative frequency of this illness in the area is of concern to all doctors.
Objects like this turn up at sales with surprising frequency.
Bullets bounced off the rock with alarming frequency.
3
the rate at which a sound or electromagnetic wave vibrates(= moves up and down)
فرکانس, بسامد
a high/low frequency
Electromagnetic waves of radio frequency can make molecules vibrate and heat up.
4
the number of radio waves for every second of a radio signal
فرکانس, بسامد
a frequency band
an FM radio frequency
There are only a limited number of broadcasting frequencies.