FREQUENCY

noun (plural -cies) Date: 1600 the fact or condition of occurring frequently, 2. the number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variable, the number, proportion, or percentage of items in a particular category in a set of data, the number of repetitions of a periodic process in a unit of time: as, the number of complete alternations per second of an alternating current, the number of complete oscillations per second of energy (as sound or electromagnetic radiation) in the form of waves