Monochrome – UK: /ˈmɒn.ə.krəʊm/ US: /ˈmɑː.nə.kroʊm/

Adjective:  1) having only one color, 2) representing colors with shades of gray (photography).

Origin: From Ancient Greek μονόχρωμος ‎(monókhrōmos), from μόνος ‎(mónos, one) + χρῶμα ‎(khrôma, color); mono- +‎ -chrome.

First known use: Early decades of the 19th century.

Modern use: Photography by Vincent de Groot (1964) a dutch photographer based in France showing his work here on www.photo-vinc.com