1AV to put one picture, image, or photograph on top of another so that both can be partly seen
superimpose something on/onto something
A photo of a cup of cappuccino had been superimposed on a picture of Venice.
A photo of a cup of cappuccino had been superimposed on a picture of Venice.2 to combine two systems, ideas, opinions etc so that one influences the other
superimpose something on/onto something
Eastern themes superimposed onto Western architecture
Eastern themes superimposed onto Western architecture —superimposition
noun [uncountable]
noun [uncountable]