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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the alkaline waste material that is a byproduct of the Leblanc process

from the GNU version of the Collaborative International Dictionary of English

  • n. the waste material, consisting chiefly of calcium hydroxide and sulphide, which accumulates as a useless residue or side product in the ordinary Leblanc process of soda manufacture; -- called also alkali waste.


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