Standard English porcelain since 1800. Containing bone ash, which kept porcelain from warping or collapsing when fired. The words "bone china" do not appear as part of a mark until about 1915.
A form of porcelain made of quartz, kaolin clay and bone ash. Bone china is usually white and very translucent. It has a very delicate appearance but is surprisingly strong.
Porcelain made by the addition of large quantities of bone ash.