/ Dictionary / Index S supermassive star: Meaning and Definition of Find definitions for: su'per•mas'sive star' Pronunciation: (s'pur-mas'iv, s"-), [key] a star with a mass more than fifty times the mass of the sun. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. supermarketer supermaxilla Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language