In mathematics:

Recurring means occurring over and over. Recurring can also refer to several different things: In music:

In economics:

In television:

In dreams:

In software engineering:

A recurring decimal (or "repeating decimal") is an expression representing a real number in the decimal numeral system, in which after some point the same sequence of digits repeats infinitely.

Recurring expense is an ongoing (continual) expenditure.

A recurring character is one, usually on a prime-time series, that appears from time to time and may grow into a larger role.

The curiously recurring template pattern (CRTP) is a software design pattern where a base class template is instantiated with a derived class type as its template parameter.

In the soap opera world, recurring status can occur when an actor is hired on a non-contract basis for an extended period of time, or can also occur when an already-established performer is dropped from their contract but remains on the cast list for future call backs.

A recurring dream is a dream that someone repeatedly claims to have over an extended period of time.

Recurring is a 1991 album by the British psychedelic-rock group, Spacemen 3.

In computer programming: Recursion is when a subroutine/method/function calls itself from within its body to solve a given computational problem. the most commonly-used example is that of calculating the factorial of a number using recurrence.