sodium-vapor lamp

[ soh-dee-uhm-vey-per ]

nounElectricity.
  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.

Origin of sodium-vapor lamp

1
First recorded in 1935–40
  • Also called sodium lamp.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024