evolution рдХреНрдпрд╛ рд╣реИрдВ? evolution рдХреНрдпрд╛ рд╣реИрдВ? A gradual process in which something changes into a different and usually more complex or better form. See Synonyms at development.The process of developing.Gradual development.Biology Change in the genetic composition of a population during successive generations, as a result of natural selection acting on the genetic variation among individuals, and resulting in the development of new species.Biology The historical development of a related group of organisms; phylogeny.A movement that is part of a set of ordered movements.Mathematics The extraction of a root of a quantity.