[let.ter.boxed] adj [perh. fr. the resemblance of the picture on the TV screen or the bands above and below the picture to slots in a mailbox] (1989) of a video recording: formatted so as to display the full rectangular frame of a wide-screen motion picture -- let.ter.box.ing n
LETTERBOXED
Meaning of LETTERBOXED in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012