Delay line may refer to:

Propagation delay, the length of time taken for something to reach its destination Analog delay line, used to delay a signal Bi-directional delay line, a numerical analysis technique used in computer simulation for solving ordinary differential equations by converting them to hyperbolic equations Digital delay line, a sequential logic element Delay-line memory, a form of computer memory used on some of the earliest digital computers Detcord delay line loops

See also

Delay (disambiguation) Line (disambiguation)