mercury-vapor lamp

[ mur-kyuh-ree-vey-per ]
/ ˈmɜr kyə riˌveɪ pər /

noun Electricity.

a lamp producing a light with a high actinic and ultraviolet content by means of an electric arc in mercury vapor.

Origin of mercury-vapor lamp

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019