The property of occurring often rather than infrequently.
The quotient of the number of times n a periodic phenomenon occurs over the time t in which it occurs: f=n/t.
number of times an event occurred in an experiment (absolute frequency)
The rate of occurrence of anything; the relationship between incidence and time period.
The act of recurring.
The act of defining an object (usually a function) in terms of that object itself.
The invocation of a procedure from within itself.