1. complete circular movements around a central point or axis
2. violent overthrows of governments or political systems
3. dramatic changes or transformations in ideas, methods, or conditions

Examples

• The engine makes 3000 revolutions per minute.
• The wheel completed several revolutions before stopping.
• The French and American revolutions changed world history.
• Many revolutions have been fought for independence and freedom.
• The industrial revolution transformed how people worked and lived.
• The digital revolution has changed how we communicate.
• Scientific revolutions often challenge accepted theories.