/ Dictionary / Index O organosilicon: Meaning and Definition of Find definitions for: or•ga•no•sil•i•con Pronunciation: (ôr"gu-nō-sil'i-kun, -kon", ôr-gan"ō-), [key] — adj. Chem. pertaining to or noting an organic compound containing silicon, esp. where attached directly to a carbon atom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. organophosphate organosiloxane Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language