What does silicate mean?
Silicate is a technical noun for a chemical compound or mineral containing silicon and oxygen, particularly a salt of silicic acid. In mineralogy, it refers more specifically to minerals built from linked silicon–oxygen units, while in chemistry it can name a broader family of related compounds. The term is chiefly used in scientific and industrial contexts: silicate minerals are important constituents of many rocks, silicate glass is widely used, and silicate materials occur in ceramics and polymers. As a rare verb, to “silicate” means to impregnate a material with a silicate. Although pronunciation and meaning can vary slightly by region and context, the word is recognized in both British and American English. It is useful because it identifies a chemically significant family of materials whose properties make them valuable in construction, technology, and the Earth itself.
A chemical compound or mineral containing silicon and oxygen, especially a salt of silicic acid.
"This silicate is added to the ceramic mixture to improve its resistance to heat."
In geology, the word often refers specifically to a mineral composed of silicate groups.
To impregnate a material with a silicate.
"The manufacturer silicates the surface to increase its resistance to weathering."
Used in the plural when referring to multiple silicate compounds or minerals.
"Several silicates occur naturally in the mountain's exposed rock."
Silicate minerals make up roughly 90 percent of Earth's crust, making them a chemical foundation of the planet's rocky surface.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does silicate come from?
The English word emerged in the early nineteenth century from silica with the chemical suffix -ate. Silica in turn comes through New Latin from Latin silex, silicis, meaning “flint” or “pebble”; related forms such as silicic and silicon continue this etymological line. The terminology developed alongside modern chemistry and mineralogy, in which silicates are compounds built around silicon–oxygen units.
Related word forms
How silicate is actually used
The noun is chiefly formal and technical, appearing in chemistry, mineralogy, geology, materials science, and industrial contexts. The verb is comparatively rare and normally occurs in specialized or historical usage.
Easily confused with silicate
Silica specifically means silicon dioxide, whereas silicate is a broader term for compounds or minerals containing silicon and oxygen.