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“ev·o·lu·tion n.
1. A gradual process in which something changes into a different and usually more complex or better form. See Synonyms at development.
2.
a. The process of developing.
b. Gradual development.
3. Biology
a. 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.
b. The historical development of a related group of organisms; phylogeny.
4. A movement that is part of a set of ordered movements.
5. Mathematics The extraction of a root of a quantity.
[Latin volti, voltin-, from voltus, past participle of volvere, to unroll; see evolve.]
evo·lution·al, evo·lution·ary (-sh-nr) adj.
evo·lution·ari·ly adv.”
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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