- an overthrow or repudiation and the thorough replacement of an established government or political system by the people governed.
- a radical and pervasive change in society and the social structure, especially one made suddenly and often accompanied by violence.
- a sudden, complete or marked change in something: the present revolution in church architecture.
- a procedure or course, as if in a circuit, back to a starting point.
- a single turn of this kind.
- Mechanics.
- a turning round or rotating, as on an axis.
- a moving in a circular or curving course, as about a central point.
- a single cycle in such a course.
- Astronomy.
- (not in technical use) rotation (def. 2).
- the orbiting of one heavenly body around another.
- a single course of such movement.
- a round or cycle of events in time or a recurring period of time.
- a time of worldwide orogeny and mountain-building.
- the overthrow or repudiation of a regime or political system by the governed
- (in Marxist theory) the violent and historically necessary transition from one system of production in a society to the next, as from feudalism to capitalism
- a far-reaching and drastic change, esp in ideas, methods, etc
- movement in or as if in a circle
- one complete turn in such a circle
- the orbital motion of one body, such as a planet or satellite, around another
- one complete turn in such motion
- a cycle of successive events or changes
- a profound change in conditions over a large part of the earth's surface, esp one characterized by mountain building
