/ Dictionary / Index M maltha: Meaning and Definition of Find definitions for: mal•tha Pronunciation: (mal'thu), [key] — n. a liquid bitumen used in ancient times as a mortar or waterproofing agent. any of various natural mixtures of bituminous hydrocarbons. a viscous mineral liquid or semiliquid bitumen; a mineral tar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: maltha (Thesaurus) malt extract malthene Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language