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of, pertaining to, characterized by, or of the nature of a , or a sudden, complete, or marked change:
a revolutionary junta.
radically new or innovative; outside or beyond established procedure, principles, etc.:
a revolutionary discovery.
(initial capital letter) of or relating to the American Revolution or to the period contemporaneous with it in U.S. history:
Revolutionary heroes; Revolutionary weapons.
.
a revolutionist.
Contemporary Examples

Liberian revolutionary Leymah Gbowee issued a stirring call to action, shouting, “You die sitting down!”
A Night of Extraordinary Women Liz Goodwin September 13, 2011

In this Newcastle Brown Ale ad, gangly British comedian Stephen Merchant posits, ‘What if the Brits won the revolutionary War?’
Will Ferrell Soccer Speech, Cliff Dive Slip ‘N Slides, and More Viral Videos Alex Chancey June 28, 2014

Just like Fight Club or The Matrix, the wave of revolutionary protest-battles also has a mindblowing ending.
The Real Clash of Civilizations James Poulos February 28, 2014

One of the most revolutionary soaps in the Arab world was designed as pure entertainment.
The World’s Most Subversive Soap Operas Christopher Dickey October 26, 2013

Under all the revolutionary argot, the new state functioned just like the old state – only worse.
David’s Bookclub: Blogging the Revolution David Frum March 16, 2013

Historical Examples

The process of revolutionary organization in Venezuela and her sister states was much the same as that later adopted in Cuba.
The History of Cuba, vol. 2 Willis Fletcher Johnson

It would be revolutionary so to do by a simple vote of this body.
Samantha Among the Brethren, Part 7. Josiah Allen’s Wife (Marietta Holley)

Catiline is supposed to be the author of the revolutionary schemes.
The Miscellaneous Writings and Speeches of Lord Macaulay, Vol. 1 (of 4) Thomas Babington Macaulay

Nobody, even in revolutionary France, imagines that it will work.
The American Mind Bliss Perry

At this appearance of a revolutionary socialist party the Left gnashes its teeth.
History of the Commune of 1871 P. Lissagary

noun (pl) -aries
a person who advocates or engages in revolution
adjective
relating to or characteristic of a revolution
advocating or engaged in revolution
radically new or different: a revolutionary method of making plastics
rotating or revolving
adjective
(mainly US) of or relating to the conflict or period of the War of American Independence (1775–83)
of or relating to any of various other Revolutions, esp the Russian Revolution (1917) or the French Revolution (1789)
adj.

1774; see revolution + -ary. As a noun, from 1850 (cf revolutionist).