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noun
: an electric lamp that contains sodium vapor and electrodes between which a luminous discharge takes place and that is used especially for lighting highways
Word History
First Known Use
1933, in the meaning defined above
Time Traveler
The first known use of sodium-vapor lamp was
in 1933
Dictionary Entries Near sodium-vapor lamp
Cite this Entry
“Sodium-vapor lamp.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sodium-vapor%20lamp. Accessed 5 Dec. 2022.
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