(1) Meaning "two." Stereo refers to the left and right channels or the left and right speakers in a sound system. The term also refers to the components (see
stereo system). See
stereophonic.
(2) Meaning "solid" and "3-dimensional." Refers to the left and right images in a 3D still picture or 3D movie frame. See
stereopsis,
3D visualization and
3D rendering.