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.
A monocyte count is part of a complete blood count and is expressed either as a ratio of monocytes to the total number of white blood cells counted, or by absolute numbers.D Rendering of a Monocyte. Monocytes are a type of white blood cells (leukocytes). They are the largest of all leukocytes. They are part of the innate immune system of vertebrates including all mammals (humans included), birds, reptiles, and fish.