■ noun
1》 a forcible overthrow of a government or social order, in favour of a new system.
↘(in Marxism) the class struggle expected to lead to political change and the triumph of communism.
2》 a dramatic and wide-reaching change: marketing underwent a ~.
3》 an instance of revolving.
↘motion in orbit or in a circular course or round an axis or centre.
↘the single completion of an orbit or rotation.
Derivatives
~ism noun
~ist noun
Origin
ME: from OFr., or from late L. revolutio(n-) , from revolvere (see revolve ).