单词 | rochetta |
释义 | † rochettan. Obsolete. = polverine n. ΘΚΠ society > occupation and work > materials > derived or manufactured material > glass and glass-like materials > [noun] > glass-making materials metal1589 saffora1604 massacote1622 frit1662 polverine1662 rochetta1662 tarso1662 Spanish ashes1725 bollito1753 glass-maker's manganese1797 soap of glass1815 cullet1817 muff1820 batch1874 society > occupation and work > materials > derived or manufactured material > vegetable extracts or preparations > [noun] > potash > used in glass-making saffora1604 barilla1622 massacote1622 polverine1662 rochetta1662 Spanish ashes1725 1662 C. Merrett tr. A. Neri Art of Glass i Polverine, or Rochetta [It. rocchetta], which comes from the Levant and Syria, is the ashes of a certain herb growing there in abundance. 1738 G. Smith tr. Laboratory iii. 82 Take of calcin'd Lead 15 Pound; of Rochetta or pulverised Crystal-Frit 12 Pound. 1766 Philos. Trans. 1765 (Royal Soc.) 55 21 With metal that hath much salt, as crystal and rochetta have, you cannot make a fair green. 1813 ‘T. Martin’ Circle Mech. Arts 373/1 ‘Polverine’ or ‘Rochetta’ is one [substance used in glass-making] that is procured from the Levant. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online December 2020). < n.1662 |
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