/ Dictionary / Index S Simplicius: Meaning and Definition of Find definitions for: Sim•pli•ci•us Pronunciation: (sim-plish'ē-us), [key] died a.d.483, pope 468–483. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. simplicity simplify Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language