Main Entry: fre·quen·cy

Pronunciation: \ˈfrē-kwən(t)-sē\

Function: noun

Inflected Form(s): plural fre·quen·cies

Date: 1600

1 : the fact or condition of occurring frequently
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: 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