Meaning of FADE-IN in English
/fayd"in'/ , n.
1. Motion Pictures , Television. a gradual increase in the visibility of a scene.
2. Broadcasting , Recording. a gradual increase in the volume of sound, esp. of recorded or broadcast music, dialogue, or the like, usually starting from complete inaudibility.
[ 1915-20; n. use of v. phrase fade in ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012