- 1. A group of cells growing on a solid nutrient surface, each arising from the multiplication of an individual cell; a clone. 2. A group of people with similar interests, living in a particular location or area. [L. colonia, a c.]- daughter c. a secondary c. growing on the surface of an older c.; it is smaller and may have characteristics different from those of the mother c..- mother c. a c. which gives rise to a secondary c. (a daughter c.), the latter growing on the surface of the former; the mother c. is larger than the daughter c., and the characteristics of the colonies may differ.- mucoid c. a c. showing viscous or sticky growth typical of an organism producing large quantities of a carbohydrate capsule.- O c. growth of a nonmotile bacterium in discrete, compact colonies in contrast to a film of growth produced by some motile bacteria. Cf.:H c.. [Ger. ohne Hauch, without breath]- rough c. a bacterial c. with a granular, flattened surface; this type of c. is usually associated with loss of virulence with respect to that of smooth colonies.- smooth c. a bacterial c. with a glistening, rounded surface; this type of c. is usually associated with increased virulence with respect to that of rough colonies.- spheroid c. a c. of protozoa in which the individual cells are held together in a coherent spherical mass by a gelatinoid material.
* * *col·o·ny 'käl-ə-nē n, pl -nies a circumscribed mass of microorganisms usu. growing in or on a solid medium
* * *n.a discrete population or mass of microorganisms, usually bacteria, all of which are considered to have developed from a single parent cell. Bacterial colonies that grow on agar plates differ in shape, size, colour, elevation, translucency, and surface texture, depending on the species. This is used as a means of identification. See also culture.
* * *col·o·ny (kolґə-ne) [L. colonia] a collection or group of bacteria in a culture derived from the increase of an isolated single organism or group of organisms.
Medical dictionary. 2011.