petuntze

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pe·tun·tze

or pe·tun·tse P0228700 (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).]