revolution

1. (countable, politics) A political upheaval in a government or state characterized by great change.Examples: "The revolution had completely transformed the monarchy into a republic."; "Una rivoluzione è certamente la cosa più autoritaria che ci sia: è l'atto per il quale una parte della popolazione impone la sua volontà all'altra parte per mezzo di fucili, baionette e cannoni; mezzi autoritari, se ce ne sono; e il partito vittorioso, se non vuole aver combattuto invano, deve continuare questo dominio col terrore che le sue armi inspirano ai reazionari."; "The essence of every revolution consisted and consists in putting a new class in power, thus enabling it to realize its own program in life."countable

2. (countable, politics) The popular removal and replacement of a government, especially by sudden violent action.Examples: "For a long time the dormouse and polecat had seemed to him overfeeble enemies for his restless valour, even as the granary floor seemed to afford too narrow a field. Every day he read the papers of the previous day in the servants' hall of the houses he visited, and it appeared to him that this war in America, which was hailed as the awakening of the spirit of liberty and justice in the New World, ought to produce a revolution in France."countable

3. (astronomy) In the case of celestial bodies, the traversal of one body along an orbit around another body.Examples: "It takes 365 days for the Earth to complete one revolution around the sun."countableuncountable