• # Frequency

#### Pronunciation

• enPR: frĕʹkwən-sē, IPA: /ˈfriːkwənsi/

#### Origin

From Latin frequentia, from frequens.

## Full definition of frequency

#### frequency

(plural frequencies)
1. (uncountable) The rate of occurrence of anything; the relationship between incidence and time period.
• With growing confidence, the Viking’s raids increased in frequency.
• The frequency of bus service has been improved from 15 to 12 minutes.
2. (uncountable) The property of occurring often rather than infrequently.
• The FAQ addresses questions that come up with some frequency.
• The frequency of the visits was what annoyed him.
3. (countable) The quotient of the number of times $n$ a periodic phenomenon occurs over the time 
t in which it occurs: $f = n$
t.
• The frequency of the musical note A above middle C is 440 oscillations per second.
• ''The frequency of a wave is its velocity $v$ divided by its wavelength 
\lambdaf = v
\lambda.
• Broadcasting live at a frequency of 98.3 megahertz, we’re your rock alternative!
• The frequency for electric power in the Americas is generally 60 Hz rather than 50.
1. (statistics) number of times an event occurred in an experiment (absolute frequency)