Metasilicate refers to a compound containing the anion SiO3^2-. There are several synonyms for metasilicate, including silicate monomer, silicon oxide, monosilicate, and silicic acid. These compounds are essential in the production of ceramics, glass, detergents, and other industrial products. They are also used in the food industry as an anti-caking agent. Metasilicates find their applications in water treatment as well because of their ability to remove hardness ions from water. They are widely used in construction and infrastructure, as they improve durability and strength of concrete. In summary, metasilicates are versatile compounds critical in several industrial and commercial applications.