What does kaolin mean?
Kaolin is a fine, white clay especially valued for its use in making porcelain, ceramics, paper, paint, and other industrial products. Its usefulness comes from its fine texture, pale color, and ability to become hard and durable when fired. The material has long been associated with the production of Chinese porcelain and is also known in English as china clay. In geology, the term can refer more narrowly to kaolinite or to clay dominated by that mineral. Although kaolin occurs naturally, commercially useful deposits are often processed to remove impurities and produce material suitable for specialized manufacturing. The word is now an international technical term, but it retains a strong historical connection with the Chinese clay and porcelain trade.
nounA fine, white clay used in the manufacture of porcelain, ceramics, paper, paint, and other products. Also known as china clay, it is valued for its smoothness, whiteness, and ability to withstand high temperatures.
- A fine white clay used in ceramics and related industrial products.
- The mineral kaolinite, especially when occurring as a compact clay or as a component of a rock.
"The porcelain is made from kaolin combined with other minerals and fired at a very high temperature."
"The artist used kaolin in the white glaze applied to the ceramic vessel."
"Geologists discovered extensive kaolin deposits near the river."
Rare in general usage; kaolin is normally used as an uncountable mass noun.
"Samples of the kaolins were compared for purity and particle size."
Kaolin gave its name to both china clay and the mineral kaolinite, linking the history of porcelain to the hills where the clay was first prized.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does kaolin come from?
The word comes from Chinese gāolǐng, meaning “high ridge,” the name of a place near Jingdezhen in China where the clay was obtained. It entered English during the late eighteenth century through European accounts of Chinese porcelain and the trade in kaolin. The name was later applied mineralogically to kaolinite and related geological materials.
Related word forms
How kaolin is actually used
In general usage, kaolin usually refers to the commercial white clay rather than to a single mineral specimen. It is a technical term used in ceramics, geology, paper manufacturing, paint production, and related industries.
Easily confused with kaolin
Kaolin is the commercial clay material, while kaolinite is the specific mineral that makes up much of it.