mercury-vapor lamp

American  

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

noun

Electricity.

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

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Etymology

Origin of mercury-vapor lamp

First recorded in 1900–05

Example Sentences

A person's face looks ghastly by the greenish light of a mercury-vapor lamp.

From Project Gutenberg

At night a large mercury-vapor lamp in the center of the room, supplemented by a number of well-placed incandescent electric lights, gives ample illumination.

From Project Gutenberg

In ordinary photographic printing tungsten lamps are widely used, but in blue-printing the white flame-arc and the mercury-vapor lamp are generally employed.

From Project Gutenberg

A red postage stamp looks greenish gray in the green light of a mercury-vapor lamp.

From Project Gutenberg