/ Dictionary / Index R reductor: Meaning and Definition of Find definitions for: re•duc•tor Pronunciation: (ri-duk'tur), [key] — n. Chem. a tube with a stopcock at one end, usually filled with a metal, for reducing a constituent in a solution. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. reductivism redundancy Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language