{i} act of placing one thing above or on top of another; act of adding to; act of combining in such a way that both images are seen simultaneously (Television, Film)
If features or characteristics from one situation are superimposed onto or on another, they are transferred onto or used in the second situation, though they may not fit. Patterns of public administration and government are superimposed on traditional societies
If one image is superimposed on another, it is put on top of it so that you can see the second image through it. His picture was superimposed on a muscular body You can superimpose the lettering directly onto one of your pictures