英和和英

語源

From French natron, from Spanish natrón, from Arabic نَطْرُون (naṭrūn), from Ancient Greek νίτρον (nítron, “nitre”), ultimately from Egyptian nṯrj (“natron”):

Doublet of niter and trona.

名詞

natron (uncountable)

1. (mineralogy) A crystalline mixture of hydrous sodium carbonate and sodium bicarbonate, with the chemical formula Na₂CO₃·10H₂O.
   • 1931, Aristotle, translated by E.W. Webster, Meteorologica, Bk. IV, ch. 6:

     Natron and salt are soluble by liquid, but not all liquid but only such as is cold. Hence water and any of its varieties melt them, but oil does not.

   • 1974, Lawrence Durrell, Monsieur, Faber & Faber, published 1992, page 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?

関連する語

アナグラム

• nonart, nonrat