Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

frequency

play
noun fre·quen·cy \ˈfrē-kwən(t)-sē\

Definition of frequency

plural

frequencies

  1. 1 :  the fact or condition of occurring frequently

  2. 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. 3 :  the number of repetitions of a periodic process in a unit of time: as a :  the number of complete alternations per second of an alternating current b :  the number of complete oscillations per second of energy (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



1600

First Known Use of frequency

1600

Other Electrical Engineering Terms


FREQUENCY Defined for Kids

frequency

play
noun fre·quen·cy \ˈfrē-kwən-sē\

Definition of frequency for Students

plural

frequencies

  1. 1 :  frequent repetition <Rain fell with frequency.>

  2. 2 :  rate of repetition <She went with increasing frequency.>

  3. 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 Dictionary

frequency

play
noun fre·quen·cy \ˈfrē-kwən-sē\

Medical Definition of frequency

plural

frequencies

  1. 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. 2:  the number of repetitions of a periodic process in a unit of time





Seen and Heard

What made you want to look up frequency? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

of striking ability or excellence

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

two-chairs-on-a-pier-by-the-ocean-in-summer

Which of the following words means “of or relating to summer”?

brumal estival hiemal vernal
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ