Definition of back-project in English:

back-project

transitive verb

[with object]
  • Project (an image) onto the back of a translucent screen for viewing or for use as a background in filming.

    • ‘filmed sequences were back-projected onto the structure’

Pronunciation

back-project

/ˈbakprəˌjekt/ /ˈbækprəˌdʒɛkt/