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English definition of “revolution”

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revolution

noun uk   /ˌrev.əˈluː.ʃən/ us  

revolution noun (POLITICS)

B2 [C or U] a change in the way a country is governed, usually to a different political system and often using violence or war: The French Revolution changed France from a monarchy to a republic. The country seems to be heading towards revolution.
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revolution noun (CHANGE)

B2 [C] a very important change in the way that people do things: a technological revolution Penicillin produced a revolution in medicine.
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revolution noun (CIRCULAR MOVEMENT)

[S] a circular movement: The revolution of the Earth around the sun was proposed by Copernicus. [C] one complete circular movement of something, for example a wheel: Engine speed can be measured in revolutions per minute ( abbreviation rpm).
(Definition of revolution from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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