/ Dictionary / Index S Septembrist: Meaning and Definition of Find definitions for: Sep•tem•brist Pronunciation: (sep-tem'brist), [key] — n. a person who instigated or took part in the September Massacre. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. September Massacre septempartite Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language