IMAX (?a?mæks) n (Film) trademark a process of film projection using a giant screen on which an image approximately ten times larger than standard is projected[C20: from image + maximum]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014