/ Dictionary / Index R reaction turbine: Meaning and Definition of Find definitions for: reac'tion tur"bine Pronunciation: [key] a turbine driven by the reactive force of a fluid passing through the rotor blades. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. reaction time reactivate Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language