/ Dictionary / Index S silicium: Meaning and Definition of Find definitions for: si•li•ci•um Pronunciation: (su-lish'ē-um, su-lis'-), [key] — n. silicon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. silicify silicle Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language