Word Study
petuntse
CIDE DICTIONARY
petuntse, n. [From Chinese.].
Powdered fledspar, kaolin, or quartz, used in the manufacture of porcelain. [1913 Webster]
OXFORD DICTIONARY
petuntse, n. a white variable feldspathic mineral used for making porcelain.
Etymology
Chin. baidunzi f. bai white + dun stone + suffix -zi
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