Sodiumvapor lamp

sodium-vapor lamp

[soh-dee-uhm-vey-per]
noun Electricity.
an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways.
Also called sodium lamp.


Origin:
1935–40

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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sodium-vapor lamp

noun
lamp in which an electric current passed through a tube of sodium vapor makes a yellow light; used is street lighting 
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