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sodium-vapor lamp

[ soh-dee-uhm-vey-per ]
/ ˈsoʊ di əmˌveɪ pər /
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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.

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Also called sodium lamp.

Origin of sodium-vapor lamp

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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