/ Dictionary / Index M mineral tar: Meaning and Definition of Find definitions for: min'eral tar" Pronunciation: [key] bitumen of the consistency of tar; maltha. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mineral spring mineral water Related Content Daily Word Quiz: abscond Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language