evolution

evolution is a topic covered in the Taber's Medical Dictionary.

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(ev″ŏ-loo′shŏn )

[L. evolutio, unrolling]
The accumulation over time of sufficient heritable changes within the germ cells of organisms to significantly change their adult forms. More generally, any orderly and gradual process of modification whereby a system, whether physical, chemical, social, or intellectual, becomes more highly organized.

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