the number of times that an event occurs within a given period; rate of recurrence
3. physics
the number of times that a periodic function or vibration repeats itself in a specified time, often 1 second. It is usually measured in hertz
Symbol: ν, f
4. statistics
a.
the number of individuals in a class (absolute frequency)
b.
the ratio of this number to the total number of individuals under survey (relative frequency)
5. ecology
a.
the number of individuals of a species within a given area
b.
the percentage of quadrats that contains individuals of a species
Also called (for senses 1, 2): frequence
Word origin
C16: from Latin frequentia a large gathering, from frequēns numerous, crowded
Examples of 'frequencies' in a sentence
frequencies
They're mostly crystal-calibrated, you see, which means they can't switch to unplanned frequencies.
Shah, Idries KARA KUSH
Frequencies are studied in terms of the spectrum.
Times, Sunday Times (2009)
Wireless routers can work on several frequencies.
Times, Sunday Times (2016)
A lamp is then flashed at two different frequencies for one and zero.
Times, Sunday Times (2009)
The 40mm drivers have a central vent to emphasise low and mid frequencies.
Times, Sunday Times (2012)
He suggests that higher frequencies carry better in a forest.
Times, Sunday Times (2006)
The wooden housings enhance voice and bass frequencies.
Times, Sunday Times (2014)
They even block phones that can hop to other frequencies if they are disrupted.
Times, Sunday Times (2011)
The new frequencies will be best suited for high-speed data services.
Times, Sunday Times (2015)
All related terms of 'frequencies'
frequency
The frequency of an event is the number of times it happens during a particular period.
gene frequency
the frequency of occurrence of a particular allele in a population
hf
half
high frequency
a radio-frequency band or radio frequency lying between 3 and 30 megahertz
LF
low frequency
low frequency
a radio-frequency band or a frequency lying between 300 and 30 kilohertz
af
Afghanistan
angular frequency
the frequency of a periodic process, wave system, etc, expressed in radians per second
audio frequency
a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
expected frequency
the number of occasions on which an event may be presumed to occur on average in a given number of trials
forcing frequency
the frequency of an oscillating force applied to a system
medium frequency
a radio-frequency band or radio frequency lying between 3000 and 300 kilohertz
natural frequency
the frequency at which a system vibrates when set in free vibration
radio frequency
a frequency or band of frequencies that lie in the range 10 kilohertz to 300 000 megahertz and can be used for radio communications and broadcasting
relative frequency
the ratio of the actual number of favourable events to the total possible number of events; often taken as an estimate of probability
rf
rinforzando
spatial frequency
the measure of fine detail in an optical image in terms of cycles per millimetre
VF
video frequency
video frequency
the frequency of a signal conveying the image and synchronizing pulses in a television broadcasting system. It lies in the range from about 50 hertz to 8 megahertz
fundamental frequency
of, involving, or comprising a foundation ; basic
SHF
superhigh frequency
superhigh frequency
a radio-frequency band or radio frequency lying between 30 000 and 3000 megahertz
UHF
UHF is a range of radio waves which allows a radio or television receiver to produce a good quality of sound . UHF is an abbreviation for 'ultra-high frequency'.
ultrahigh frequency
a radio-frequency band or radio frequency lying between 3000 and 300 megahertz
if
You use if in conditional sentences to introduce the circumstances in which an event or situation might happen , might be happening , or might have happened.
intermediate frequency
the frequency to which the signal carrier frequency is changed in a superheterodyne receiver and at which most of the amplification takes place
very high frequency
a radio-frequency band or radio frequency lying between 30 and 300 megahertz
very low frequency
a radio-frequency band or radio frequency lying between 3 and 30 kilohertz
VHF
VHF is used to refer to a range of frequencies that is often used for transmitting radio broadcasts in stereo . VHF is an abbreviation for 'very high frequency'.
VLF
very low frequency
EHF
extremely high frequency
elf
In fairy stories , elves are small magical beings who play tricks on people.
extremely high frequency
a radio frequency between 30 000 and 300 000 megahertz
extremely low frequency
a radio frequency or radio-frequency band below 3 kilohertz
radiofrequency
the frequency of the transmitting waves of a given radio message or broadcast
fundamental
You use fundamental to describe things, activities , and principles that are very important or essential . They affect the basic nature of other things or are the most important element upon which other things depend .