The looping of a subsection of audio or video material.

plural of A-B loop

plural of autoregulatory loop

plural of do loop

plural of Lebanese loop

plural of locker loop

plural of Lofstrom loop

plural of loop of Henle

plural of loop invariant

A situation where, by moving only upwards or downwards through a hierarchical system, one finds oneself back where one started. These loops often involve self-reference and paradox.