rev·o·lu·tion 
/ˌrɛvəˈlu:ʃən/ noun
plural rev·o·lu·tions /ˌrɛvəˈlu:ʃən/ noun 1 a : the usually violent attempt by many people to end the rule of one government and start a new one [count] ▪ the American/French Revolution ▪ The group started a revolution. [noncount] ▪ The king knew that there was a threat of revolution. — see also counterrevolution
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] — see also industrial revolution 2 technical a : the action of moving around something in a path that is similar to a circle : rotation [count] ▪ the revolution of the Earth around the Sun [noncount] ▪ The period of revolution of the Earth around the Sun is equal to one year.
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.
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] — see also industrial revolution
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.
