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[ney-tron, -truh n] /ˈneɪ trɒn, -trən/

a mineral, hydrated sodium carbonate, Na 2 CO 3 ⋅10H 2 O.
a whitish or yellow mineral that consists of hydrated sodium carbonate and occurs in saline deposits and salt lakes. Formula: Na2CO3.10H2O

1680s, from French natron (1660s), from Spanish natron, from Arabic natrun, from Greek nitron (see nitrogen). It is the source of the chemical symbol Na for sodium.


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