the way in which living things change and develop over millions of years:
Darwin's theory of evolution
B2 a gradual process of change and development:
the evolution of language
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More examples
Religious traditionalists objected to theories of evolution being taught in schools.
We watched a documentary about the story of human evolution over the last three million years.
The new telescope has helped us to understand more about the evolution of the universe.
This product was an extremely significant step in the evolution of computer games.
Natural selection is seen as the force which directs the course of evolution by preserving those traits best adapted to survive