The act of projecting film, slides, or images onto a screen. Often used as 映写する (to project).
映画祭では古いフィルムの映写が行われた。
At the film festival, projections of old films were shown.
講義でスライドの映写を頼まれた。
I was asked to project the slides during the lecture.
映写の際は暗室にしてスクリーンに集中させる。
During projection, dim the room to focus on the screen.