revolution Definition in the Cambridge English Dictionary
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Definition of “revolution” - English Dictionary

Definition of "revolution" - American English Dictionary

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revolutionnoun [C/U]

 us   /ˌrev·əˈlu·ʃən/
social studies a ​sudden and ​greatchange, esp. the ​violentchange of a ​system of ​government: [U] The ​countryseems to be ​heading toward revolution. [C] The ​discovery of ​penicillinproduced a revolution in ​medicine.
a ​movement in a ​circle or ​curve around a ​centralpoint: [C] The ​moon makes one revolution around the ​earth in about 29.5 ​days.
(Definition of revolution from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "revolution" - British English Dictionary

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revolutionnoun

uk   us   /ˌrev.əˈluː.ʃən/

revolution noun (POLITICS)

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

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

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

Definition of "revolution" - Business English Dictionary

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revolutionnoun [C]

uk   us   /ˌrevəlˈuːʃən/
a ​bigchange or ​improvement in the way that something ​works or looks, or in the way that ​people do a particular ​activity: a revolution in sth Facing up to ​climatechangerequires a revolution in ​businessthinking. an economic/​technological/​green revolution the ​digital/​internet/IT revolution
(Definition of revolution from the Cambridge Business English Dictionary © Cambridge University Press)
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