Noun
a jellylike substance (hydrated silica)
Source: WordNetIt is considered archaic now, as the terms "acidic" and "basic rock" were based on an incorrect idea, dating from the 19th century, that silicic acid was the chief form of silicon occurring in rocks. Source: Internet
The group of algae known as the diatoms synthesize their cell walls (also known as frustules or valves) from silicic acid (specifically orthosilicic acid, H 4 SiO 4 ). Source: Internet
The soluble dissociated silicic acid reacts in the porewater with the calcium hydroxide ( portlandite ) present in the cement paste to form an expansive calcium silicate hydrate (CSH). Source: Internet