Medical Dictionary
evolution
noun evo·lu·tion \ˌev-ə-ˈlü-shən also ˌē-və-\
Medical Definition of EVOLUTION
1
: a process of change in a certain direction <tumor evolution and progression—I. J. Fidler et al>
2
a : the historical development of a biological group (as a race or species) : phylogeny b : 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
—evo·lu·tion·ari·ly \-shə-ˌner-ə-lē\ adverb
—evo·lu·tion·ary \-shə-ˌner-ē\ adjective
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