1911 Encyclopædia Britannica/Porcelain

PORCELAIN, the name of that kind of ceramic ware which is characterized by a translucent body, also loosely used for the finer kinds of ware generally, popularly known as “china” (see Ceramics). The French porcelaine, from which the word comes into English, is an adaptation of the Italian porcellana, a cowrie-shell, the beautifully polished surface of which caused the name to be applied to the ware. The Italian word is generally taken to be from porcella, diminutive of porco, pig, from a supposed resemblance of the shell to a pig's back.