petuntze

pe·tun·tze

or pe·tun·tse  (pə-to͝on′tsĕ)
n.
A variety of feldspar sometimes mixed with kaolin and used in Chinese porcelain.

[Mandarin bái dūnzi : bái, white; see pekoe + dūnzi, block of stone (dūn, mound, block from Middle Chinese tun, mound, block + Mandarin -zi, noun-formative suffix; see gyoza).]
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References in periodicals archive ?
The Chinese for brick is 'petuntze' from which we derive the English word 'porcelain'.
It is made from kaolin (china clay) and petuntze (china stone) and is glazed first, and then fired at temperatures from 1300 to 1400 degrees C.