(cinematography, comedy) A revelation; an uncovering of what was hidden.
(chiefly Britain, Australia, New Zealand, obsolete in the US) The side of an opening for a window, doorway, or the like, between the door frame or window frame and the outer surface of the wall; or, where the opening is not filled with a door, etc., the whole thickness of the wall; the jamb.
“But it was Paul to whom the Lord revealed the whole doctrine of the mystery; and we firmly believe he thus became the revelator to all men of these glorious things connected with this mystery.”
“In the past, railroad workers used black oil to detect flaws and cracks in the tracks, and talc powder as a revelator.”
“In this search of evasion, he utilizes photography as a support of the imaginary and light as revelator.”