natural selection natural scientist • natural shape · · · Info · Definitions · Synonyms · Characters · · natural selection · · Text Common · · Latin · · Scripts 17 · · Length 6 · · Syllables Definitions · · · (noun) a natural process resulting in the evolution of organisms best adapted to the environment. Synonyms: survival, survival of the fittest, natural selection, selection. · · Noun Definition 1 Synonyms · · · survival · · Synonym 1 survival of the fittest · · Synonym 2 selection · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075