natron
Noun

natron (uncountable)

  1. (mineral) A crystalline mixture of hydrous sodium carbonate and sodium bicarbonate, with the chemical formula Na2CO3·10H2O.
    • 1974, Lawrence Durrell, Monsieur, Faber & Faber 1992, p. 242:
      You know the mysterious idols they were supposed to set up to worship in their chapters – were they really human heads treated with natron after the Ancient Egyptian pattern – idols of Persian or Syrian provenance?



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