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Sodium
//ˈsəʊ.dɪəm// noun
Definitions
Noun
- 1 The chemical element (symbol Na) with an atomic number of 11 and atomic weight of 22.990. It is a soft, waxy, silvery, reactive alkali metal that is never found unbound in nature. uncountable, usually
- 2 a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt) wordnet
- 3 Employing sodium. attributive, uncountable, usually
"From Keighley onwards we had obviously returned to civilisation, for the surrounding country was now studded with the sodium street lights of suburbia and a thickening industrial haze was blotting out the moon."
Etymology
Coined by British chemist Humphry Davy in 1808, from soda + -ium.
See also for "sodium"
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