frequency

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fre·quen·cy

(frē′kwən-sē)

n. pl. fre·quen·cies

1. The property or condition of occurring at frequent intervals.

2. Mathematics & Physics The number of times a specified periodic phenomenon occurs within a specified interval, as:

a. The number of repetitions of a complete sequence of values of a periodic function per unit variation of an independent variable.

b. The number of complete cycles of a periodic process occurring per unit time.

c. The number of repetitions per unit time of a complete waveform, as of an electric current.

3. Statistics

a. The number of measurements or observations having a certain value or characteristic.

b. See relative frequency.

[Latin frequentia, multitude, from frequēns, frequent-, crowded, numerous, frequent.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

frequency

(ˈfriːkwənsɪ)

n, pl -cies

1. the state of being frequent; frequent occurrence

2. the number of times that an event occurs within a given period; rate of recurrence

3. (Mathematics) 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 or f

4. (Statistics) 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. (Biology) 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

[C16: from Latin frequentia a large gathering, from frequēns numerous, crowded]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

fre•quen•cy

(ˈfri kwən si)

n., pl. -cies.

1. Also, fre′quence. the state or fact of being frequent; frequent occurrence.

2. rate of occurrence.

3. Physics.

a. the number of periods or regularly occurring events of any given kind in a unit of time, usu. one second.

b. the number of cycles or completed alternations per unit time of a wave or oscillation. Symbol: F; Abbr.: freq.

4. Math. the number of times a value recurs in a unit change of the independent variable of a given function.

5. Statistics. the number of items occurring in a given category.

[1545–55; < Latin]

fre·quen·cy

(frē′kwən-sē)

1. Physics The number of complete cycles of a wave, such as a radio wave, that occur per second. See more at wave.

2. Mathematics The ratio of the number of occurrences of some event to the number of opportunities for its occurrence.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Frequency

(See also DURATION, TIME.)

once in a blue moon Very rarely. A blue moon occurs when there is a full moon twice in the same month, an unusual event, but one that takes place from time to time.

rare as hen’s teeth See scarce as hen’s teeth, ABSENCE.

when two Fridays come together Never. Since two Fridays never come together, this expression is usually used as a sarcastic quip when one is asked when he intends to do something of an onerous nature such as complete a project, pay back a personal loan, or the like.

frequency

Number of cycles or waves per second.

ThesaurusAntonymsRelated WordsSynonymsLegend:

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Noun	1.	frequency - the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older" frequence, oftenness audio frequency, audio - an audible acoustic wave frequency radio frequency - an electromagnetic wave frequency between audio and infrared infrared, infrared frequency - the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared" wave number - the reciprocal of the wavelength of a wave attendance - the frequency with which a person is present; "a student's attendance is an important factor in her grade" count per minute, counts/minute - frequency per minute sampling frequency - (telecommunication) the frequency of sampling a continuously varying signal rate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected"
	2.	frequency - the ratio of the number of observations in a statistical category to the total number of observations relative frequency ratio - the relative magnitudes of two quantities (usually expressed as a quotient) incidence, relative incidence - the relative frequency of occurrence of something
	3.	frequency - the number of observations in a given statistical category absolute frequency cardinal number, cardinal - the number of elements in a mathematical set; denotes a quantity but not the order

frequency

noun recurrence, repetition, constancy, periodicity, commonness, frequentness, prevalence The cars broke down with increasing frequency.

Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

Translations

تَرَدُّدتَكْرار تَكَرُّرذَبْذَبَه

честота

častostčetnostfrekvencekmitočet

hyppighedfrekvensbølgelængde

Frequenz Häufigkeit Schwingungszahl

συχνότητα

frekvencooftecoofto

frecuencia

taajuustiheys

fréquence effectif

učestalost

frekvenciagyakoriságismétlődés

bylgjulengd, tíînitíîleikitíîni

frequenza

頻発

빈도

frekvence

frequentie regelmaat

hyppighet frekvens hyppig forekomst svingningstall

częstość

frequência frequencia

частота частотность

častosťfrekvenciakmitočet

frekvencapogostnostpogostost

frekvens

ความถี่

sıklık dalga frekans

tần số

频率频繁周率

frequency

[ˈfriːkwənsɪ]

A. N (gen, Elec) → frecuencia f
this is happening with increasing frequency → esto está ocurriendo con cada vez mayor frecuencia
high/low frequency → alta/baja frecuencia

B. CPD frequency band N → banda f de frecuencia
frequency distribution N (Statistics) → distribución f de frecuencia
frequency modulation N → frecuencia f modulada

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

frequency

[ˈfriːkwənsi] n

[occurrence] → fréquence f
the high frequency of sth → la fréquence élevée de qch
with increasing frequency (= more and more often) → de plus en plus souvent
to increase in frequency → être de plus en plus fréquent(e)

(PHYSICS) [sound wave] → fréquence ffrequency modulation n → modulation f de fréquence

Collins English/French Electronic Resource. © HarperCollins Publishers 2005

frequency

n → Häufigkeit f; (Phys) → Frequenz f; high/low frequency → Hoch-/Niederfrequenz f

frequency

frequency band

n → Frequenzband nt

frequency distribution

n → Häufigkeitsverteilung f

frequency modulation

n → Frequenzmodulation f

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

frequency

[ˈfriːkwənsɪ] n → frequenza
high/low frequency → alta/bassa frequenza

frequent

(ˈfriːkwənt) adjective

happening often. He made frequent journeys.

(friˈkwent) verb

to visit often. He used to frequent the George Hotel.

ˈfrequency – plural ˈfrequencies – noun

1. the state of happening often. The frequency of her visits surprised him.

2. (in electricity, radio etc) the number of waves, vibrations etc per second. At what frequency does the sound occur?

3. a set wavelength on which radio stations regularly broadcast. I regularly listen to this frequency in order to hear my favourite music.

ˈfrequently adverb

often. He frequently arrived late.

frequency

→ تَكَرُّر četnost hyppighed Häufigkeit συχνότητα frecuencia tiheys fréquence učestalost frequenza 頻発 빈도 frequentie hyppighet częstość frequencia, frequência частота frekvens ความถี่ sıklık tần số 频率

fre·quen·cy

n. frecuencia.

frequency

n (pl -cies) frecuencia

References in periodicals archive ?

As such, the MODEL always predicts a 100% probability of occurrence of the left-hand regime, when the observed frequency of occurrence of REALITY is actually 50%.

A SIMPLE PEDAGOGICAL MODEL LINKING INITIAL-VALUE RELIABILITY WITH TRUSTWORTHINESS IN THE FORCED CLIMATE RESPONSE: Using a simple pedagogical model, it is shown how information about the statistical reliability of initial-value ensemble forecasts can be relevant in assessing the trustworthiness of the climate system's response to forcing

This observed frequency of prothrombin gene mutation is comparable to other population with some differences which can be attributable to differences in population genetics.

FREQUENCY OF PROTHROMBIN GENE MUTATION IN VENOUS THROMBOEMBOLISM IN NORTHERN PAKISTAN

For the conventional Terzaghi method, the weighing procedure is obtained by multiplying the bias-compensatory factor, 1/sin [theta], by the observed frequency defined in the cell [8].

Correction of Line-Sampling Bias of Rock Discontinuity Orientations Using a Modified Terzaghi Method

The observed frequency of endogenous SCE in normal human tissue and peripheral blood lymphocytes (PBLs) is around 6-8 per cell [15, 16].

Sister Chromatid Exchange and Genomic Instability in Soft Tissue Sarcomas: Potential Implications for Response to DNA-Damaging Treatments

In general, many studies conclude that "the observed frequency, intensity, and duration of some extreme weather events have been changing as the climate system has warmed." However, it is not easy to investigate the impact of climate change on a single weather event as different regional circumstances need to be taken into account and data might be very limited.

Pakistan 7th most vulnerable country to climate

The frequency distribution (observed frequency) of blood group among the entire malignant population, i.e.

Retrospective analytical study of association between ABO blood group and malignancy

Our observation that trigger finger has similar incidence in the ring, thumb, and long fingers coupled with low observed frequency of the suspected comorbidities, hypothyroidism and diabetes, does not support the previously indicated reports that the ring finger is the most common site of trigger finger, and the disorder is associated with diabetes and hypothyroidism.

Trigger finger: Location and association of comorbidities

The frequency that each pair of states agreed and disagreed can be represented using three observed frequency tables (see Table 1 for an example of one of these three tables).

Selecting field experiment locations with archival data

The observed frequency of worsened liver function in severe dengue hepatitis following paracetamol administration was low.

Frequency of worsening liver function in severe dengue hepatitis patients receiving paracetamol: A retrospective analysis of hospital data

I have chosen here the slightly different value 0.73 in order to make it dear that the estimated value to be discussed in what follows is equal to the value of c (here 0.73) and not necessarily to the observed frequency (here 3/4).