Time loop

The time loop or temporal loop is a plot device in fiction whereby characters re-experience a span of time which is repeated, sometimes more than once, with some hope of breaking out of the cycle of repetition.^[1] Time loops are constantly resetting; when a certain condition is met, such as a death of a character or a certain point in time, the loop starts again, possibly with one or more characters retaining the memories from the previous loop.^[2]

The term "time loop" is also sometimes used to refer to a sequence of events involving travel back in time, in which the chain of causality is circular.^[1]