natron noun. ['neɪtrǝn, 'nat-] L17.
[French from Spanish natrón from Arab. narūn, nirūn, from Greek nitron NITRE.]
Native hydrous sodium carbonate, crystallizing in the monoclinic system and occurring chiefly in solution and in evaporative residues; a deposit containing this.

Comb.:
natron lake a (salt) lake from which natron is obtainable.

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