frequency.

1. The rate or regularity with which something occurs over a stated interval or range.

2. The number of observations falling in a category within a dataset.

3. The number of cycles per unit time of a periodic process.

Use it for

Words that belong together

• frequency of an event
• occurrence frequency

On the page

The frequency of the event increased even though the observation period was shorter.

Occurrence frequency was measured with the same definition in both periods.

Usage notes

Primary category: academic / formal. Forms: Singular frequency; plural frequencies. Also uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: criterion analysis, relative importance, potential and actual distinction, evidence interpretation. Disciplines: academic writing, institutional analysis, research and conceptual explanation. Commonness: moderately common.