revolution

♦ revo|lu|tion /r'evəl'uːʃən/ (revolutions)
1 [N-COUNT]
A revolution is a successful attempt by a large group of people to change the political system of their country by force.
The period since the revolution has been one of political turmoil.
2 [N-COUNT] with supp
A revolution in a particular area of human activity is an important change in that area.
The nineteenth century witnessed a revolution in ship design and propulsion.green revo|lu|tion
also Green Revolution
[N-SING]
The green revolution is the increase in agricultural production that has been made possible by the use of new types of crops and new farming methods, especially in developing countries.

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