(Analog, Analogue) A continuous signal that requires time to make a transition from one level to another. Standard audio and video signals are analog. Both can be digitized. The video in the laserdisc format is analog composite. The audio can be present in both analog and digital forms. Both the audio and video on DVD has been recorded on the disc in the digital domain. The alternate, British spelling of the word analogue is often used in the audio world.