A revolutionary is a person who either actively participates in, or advocates revolution. Also, when used as an adjective, the term revolutionary refers to something that has a major, sudden impact on society or on some aspect of human endeavour. Definition The term —both as a noun and adjective— is usually applied to the field of politics, and is occasionally used in the context of science, invention or art. In politics, a revolutionary is someone who supports abrupt, rapid, and dra… (More on Revolutionary)