noun
kaolin; white clay; potter's clay
Refers to the fine white clay used in ceramics, porcelain, and sometimes in cosmetics or paper. The term is technical but understandable in everyday contexts when discussing pottery materials.
この茶碗は白粘土で作られています。
This tea bowl is made of white clay.
白粘土は陶芸の基本的な材料の一つです。
White clay is one of the basic materials in pottery.
粘土 is the general term for clay; 白粘土 specifies the white variety.
Compound of 白 (white) and 粘土 (clay). The reading はくねんど follows standard on'yomi for the kanji.