Definition of superimposition in English:

superimposition

noun

mass noun
  • The action of placing or laying one thing over another, typically so that both are still evident.

    ‘the bizarre superimposition of wrinkles on a child's face’
    count noun ‘a striking array of cinematic effects, including superimpositions and fast motion’

Pronunciation

superimposition

/ˌsuːpərˌɪmpəˈzɪʃn/