Drainage basin. Example of a drainage basin. The dashed line is the main water divide of the hydrographic basin. A drainage basin or catchment area is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water.
Word Origin and History for monochrome Expand. n. 1660s, painting or drawing done in different tints of a single color, from Greek monochromos of a single color, from monos single, alone (see mono-) + khroma (genitive khromatos) color, complexion, skin (see chroma). As an adjective from 1849. Photographic sense is recorded from 1940.
Monochrome means one color. Typically one color is presented in different values and intensities â or different shades of the single color. Monochrome is a phrase often associated with older computer system monitors. Monitors, for example, can be monochrome, grayscale or color. Monochrome monitors actually use two colors, one for the display image (the foreground) and one for the background. Graphic and digital images can also be monochrome, grayscale, or color. In photography a monochromatic image is usually in the form of a black and white photograph, which can be produced using black and white film or by removing colors in post-production.