Longman Dictionary of Contemporary English homepage

evolution

 noun
     
Related topics: Biology
ev‧o‧lu‧tion W3 [uncountable]
1HB the scientific idea that plants and animals develop and change gradually over a long period of time
evolution of
the evolution of mammals
2 the gradual change and development of an idea, situation, or object
evolution of
the evolution of the computer
Definition from the Longman Dictionary of Contemporary English
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