Definitions of frequency

the number of observations in a given statistical category

the number of occurrences within a given time period ( usually 1 second); " the frequency of modulation was 40 cycles per second"

the ratio of the number of observations in a statistical category to the total number of observations

The repeated occurrence of a thing at short intervals or periods. Also, frequence.

Repeated occurrence of anything.

The property of being freuent.

Occurrence often at short intervals.

Occurrence of a thing often, at short intervals.