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.
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.
The historical development of a related group of organisms; phylogeny.
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.
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.
[Latin ēvolūtiō, ēvolūtiōn-, from ēvolūtus, past participle of ēvolvere, to unroll; see evolve.] ev'o·lu'tion·al, ev'o·lu'tion·ar'y (-shə-něr'ē) adj., ev'o·lu'tion·ar'i·ly adv.
[ev-uh-loo-shuh-ner-ee or, especially Brit., ee-vuh-] 
əˈlu