# frequency

noun fre·quen·cy \ ˈfrē-kwən(t)-sē \
Updated on: 14 Nov 2017

## Definition of frequency

plural frequencies
1 :the fact or condition of occurring frequently
• the frequency of automobile accidents
2 a :the number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variable
b :the number, proportion, or percentage of items in a particular category in a set of data
3 :the number of repetitions of a periodic process in a unit of time: such as
a :the number of complete alternations (see alternation 1) per second of an alternating current
b :the number of complete oscillations (see oscillation 3) per second of energy (such as sound or electromagnetic radiation) in the form of waves

## Examples of frequency in a Sentence

1. the alarming frequency of serious automobile accidents caused by young drivers

2. The frequency of student errors was frustrating to the young teacher.

3. Our visits decreased in frequency.

4. Errors were occurring with increasing frequency.

5. a sound wave of high frequency

6. waves having very different frequencies from one another

7. a current having a frequency of 60 hertz

8. a radio frequency of 30 megahertz

## Recent Examples of frequency from the Web

• Extreme precipitation events will very likely continue to increase in frequency and intensity throughout most of the world.
• But genes can also change in frequency for completely random reasons that have nothing to do with their owners’ health or strength—and everything to do with pure, dumb luck.
• The app told us the frequency, duration and total number of contractions.
• Buses will operate on 15-minute frequencies for much of the day.
• That means optical, radio-frequency, X-ray and gamma-ray observations can all be correlated with the gravitational data.
• Also the population frequencies — the statistic that gives the odds that someone other than the suspect could be the DNA source - would be lower.
• Seeking to develop something small, yet powerful, Baud and colleagues turned to ultrasound, an imaging technology that uses high-frequency sound waves to capture moving images of structures inside the body.
• The analysis showed that there's a drop in storm frequency more or less centered on top of New York City.

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'frequency.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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## frequency Synonyms

###### Synonyms
commonness, frequence, frequentness, prevalence
###### Antonyms
infrequence, infrequency, rareness, uncommonness, unusualness
###### Related Words
chronicity, constancy, continualness, regularity; appearance, incidence, occurrence

## frequency

noun fre·quen·cy \ ˈfrē-kwən-sē \

## Definition of frequency for Students

plural frequencies
1 :frequent repetition
• Rain fell with frequency.
2 :rate of repetition
• She went with increasing frequency.
3 :the number of waves of sound or energy that pass by a point every second
• Tune the stereo to receive a specific frequency of radio waves.

## frequency

noun fre·quen·cy \ ˈfrē-kwən-sē \

## medical Definition of frequency

plural frequencies
1 :the number of individuals in a single class when objects are classified according to variations in a set of one or more specified attributes
2 :the number of repetitions of a periodic process in a unit of time

## Seen and Heard

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#### belaud

play

to praise usually to excess

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