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Definition of evolution


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ev·o·lu·tion  audio  (v-lshn, v-) KEY 

NOUN:
  1. A gradual process in which something changes into a different and usually more complex or better form. See Synonyms at development.
    1. The process of developing.
    2. Gradual development.
  2. Biology
    1. 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.
    2. The historical development of a related group of organisms; phylogeny.
  3. A movement that is part of a set of ordered movements.
  4. Mathematics The extraction of a root of a quantity.

ETYMOLOGY:
Latin volti, voltin-, from voltus, past participle of volvere, to unroll ; see evolve

OTHER FORMS:
evo·lution·al or evo·lution·ary  (-sh-nr) KEY (Adjective), evo·lution·ari·ly(Adverb)


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