a wide-screen process using three adjacent, synchronized cameras for photographing and three corresponding projectors for showing the film.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
trademark wide-screen presentation of films using either three separate 35mm projectors or one 70mm projector to produce an image on a large deeply curved screen
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper