/ Dictionary / Index G gray manganese ore: Meaning and Definition of Find definitions for: gray' man'ganese ore" Pronunciation: [key] manganite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. graymail gray market Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language