n.A photographic image in which all colors are reproduced in varying shades of a neutral tone, especially one made using a gelatin silver process.AAT 2017[black-and-white photographs] Refers to a broad class of photographs having images in gray tones, black, and white, and sometimes one hue (which can result from chemical processes used, including toning, or from aging).A monochromatic photographic image.
The vast majority of modern, monochromatic photographs are made using the gelatin silver process. These photographs usually have a very neutral tone. Other processes, especially 19th-century processes, used to make monochromatic images include albumen, collodion, platinum, and palladium, which may have a pronounced warm tone, or cyanotypes, which have a pronounced blue tone. 'Black and white' is sometimes used to when 'monochromatic' is the more accurate term.