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Definition evolution in American English

evolution noun

[uncountable] noun
/ˌevəˈluʃ(ə)n/
1

the scientific theory according to which types of plants and animals change gradually over long periods of time through a process known as natural selection to become more appropriate for their environment

Example

The new fossil finds may tell us more about human evolution.

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2

the way in which something gradually changes and develops

Example

the evolution of language

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Definition evolution in American English