/ Dictionary / Index S silicic acid: Meaning and Definition of Find definitions for: silic'ic ac'id Pronunciation: [key] — Chem. Chem. any of certain amorphous gelatinous masses, formed when alkaline silicates are treated with acids, which dissociate readily into silica and water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. silicic silicide Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language