Post your monochromatic photos here! Try to use a different color group each day, especially you b&w lovers. mon·o·chrome ˈmänəˌkrōm/ noun 1. a photograph or picture developed or executed in black and white or in varying tones of only one color. adjective 1. (of a photograph or picture, or a television screen) consisting of or displaying images in black and white or in varying tones of only one color.