Learner's definition of REVOLUTION
1 a : the usually violent attempt by many people to end the rule of one government and start a new one
[noncount] b [count] : a sudden, extreme, or complete change in the way people live, work, etc.
This new theory could cause a revolution in elementary education.
the computer revolution [=the changes created by the widespread use of computers]
The growth of the middle class forced a social revolution. [=a major change in society]
the sexual revolution [=a major change in people's attitudes about sex]
2 a : the action of moving around something in a path that is similar to a circle : rotation
[noncount] b [count] : a complete turn that is made by something around its center point or line
The Earth makes one revolution on its axis in about 24 hours.
This motor operates at a speed of 5,000 revolutions per minute.