/ Dictionary / Index D dempster: Meaning and Definition of Find definitions for: demp•ster Pronunciation: (demp'stur, dem'-), [key] deemster. Demp•ster Pronunciation: (demp'stur, dem'-), [key] 1886–1950, U.S. physicist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Dempsey demulcent Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language