/ Dictionary / Index R reduced: Meaning and Definition of Find definitions for: re•duced Pronunciation: (ri-dst', -dyst'), [key] — adj. that is or has been reduced. noting a polynomial equation in which the second highest power is missing: − 4x + 4 = 0 is reduced. The cubic equation x Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: reduced (Thesaurus) reduce reduced mass Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language