The term "stereo" has two meanings. 1) In a general sense, it refers to any system or device that creates an illusion of depth and three-dimensionality by using two separate images, sounds, or other sensory inputs that are slightly different from each other. This can be seen in the case of stereo speakers which produce sound through two separate channels to create a more immersive listening experience. 2) In a specific sense, "stereo" is also used as a term for an audio recording format where two identical tracks are recorded on one side of the record or tape and the other side contains only one track that is the mirror image of the first. This allows for better sound quality and reduces distortion when played back on stereo equipment.