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sodium-vapor lamp

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

noun

Electricity.

  1. 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.

Etymology

Origin of sodium-vapor lamp

First recorded in 1935–40

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.