To save this word, you'll need to log in.
Definition of sodium-vapor lamp
: an electric lamp that contains sodium vapor and electrodes between which a luminous discharge takes place and that is used especially for lighting highways
Keep scrolling for more
Comments on sodium-vapor lamp
What made you want to look up sodium-vapor lamp? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Homophone Quiz
- In order to judge how people felt, the senator's office hired a firm to take a
______.
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share sodium-vapor lamp
Time Traveler for sodium-vapor lamp
The first known use of sodium-vapor lamp was in 1933
See more words from the same year