Definition of frequency
1 : the fact or condition of occurring frequently the frequency of automobile accidents
2a : the number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variableb : 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 asa : the number of complete alternations (see alternation 1) per second of an alternating currentb : 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
the alarming frequency of serious automobile accidents caused by young drivers
The frequency of student errors was frustrating to the young teacher.
Our visits decreased in frequency.
Errors were occurring with increasing frequency.
a sound wave of high frequency
waves having very different frequencies from one another
a current having a frequency of 60 hertz
a radio frequency of 30 megahertz
Recent Examples of frequency from the Web
The frequency of turnover in the position is hardly lost on Pereira.
Also, as the temperature increases, mowing frequency will decrease.
The method, called temporal interference, involves beaming different electric frequencies, too high for neurons to respond to, from electrodes on the skull’s surface.
Those attacks on hospitals dramatically increased in frequency once Russia waded into the fray in the fall of 2015.
The graph-like outer ring of the map, which shows the frequency of international visits, indicates that foreign trips were rare occasions until after the Second World War.
Mutations that confer protection to head lice have spread to high frequency.
Flooding is happening with increasing frequency in back bay areas.
Among the minority of herpes carriers who do know their positive status, symptoms vary in nature, intensity, and frequency.
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.
First Known Use of frequency
FREQUENCY Defined for Kids
Definition of frequency for Students
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.
Medical Definition of frequency
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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