photomontage

[ foh-tuh-mon-tahzh ]
/ ˌfoʊ tə mɒnˈtɑʒ /

noun Photography.

a combination of several photographs joined together for artistic effect or to show more of the subject than can be shown in a single photograph.

Origin of photomontage

First recorded in 1930–35; photo- + montage
Also called montage.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for photomontage

photomontage

/ (ˌfəʊtəʊmɒnˈtɑːʒ) /

noun

the technique of producing a composite picture by combining several photographs: used esp in advertising
the composite picture so produced
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