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Medical Dictionary


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noun evo·lu·tion \ˌev-ə-ˈlü-shən also ˌē-və-\

Medical Definition of evolution

  1. 1:  a process of change in a certain direction <tumor evolution and progression—I. J. Fidler et al>

  2. 2a:  the historical development of a biological group (as a race or species) :  phylogenyb:  a theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations

evolutionarily \-shə-ˌner-ə-lē\play adverb
evolutionary \-shə-ˌner-ē\play adjective

Seen and Heard

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a division or portion of a pool or whole

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