/ Dictionary / Index S siliconized: Meaning and Definition of Find definitions for: sil•i•con•ized Pronunciation: (sil'i-ku-nīzd"), [key] — adj. (of a material) having silicone added. (of iron or steel) having silicon added. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. silicone rubber silicon tetrachloride Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language