in politics, signifies a grand change or turn in government. In which sense, the revolution is used, by way of eminence, for the great turn of affairs in England, in the year 1688, when king James II. abdicating the throne, the prince and princess of Orange were declared king and queen of England, &c. In geometry, the revolution of any figure, is its motion quite round a fixed line, as an axis.

The revolution of a planet, or comet, round the sun, is nothing but its course from any point of its orbit till its return to the same. See Astronomy.