Longman Dictionary of Contemporary English homepage

evolutionary

adjective
     
Related topics: Biology
ev‧o‧lu‧tion‧a‧ry
1HB relating to the way in which plants and animals develop and change gradually over a long period of time:
the evolutionary development of birds
Some scientists have rejected evolutionary theory.
2 relating to the way in which ideas or situations gradually change and develop over a long period of time:
He is in favour of gradual, evolutionary social change.

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