revolutionary (adj) – pertaining to or bringing about a great change or revolution
BREAKDOWN: RE- (over) + VOL- (turn) + -ION (state or act) + -ARY (pertaining to)
— a revolution also means a sudden political overthrow, turn over, or great change of a governmental system or other situation
— revolution also describes orbital motion or rotation around a point
— to revolutionize means to bring about radical change
— a counterrevolution is an activity intended to reverse the effects of a previous revolution
This word is built on the root VOL-, which means to turn over or to roll.
Common VOL- words include evolve, evolution, and revolve.
More esoteric VOL- words include devolvement and volute.