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WordReference Random House Unabridged Dictionary of American English © 2024tung′sten lamp′, - Electricityan incandescent electric lamp in which the filament is made of tungsten.
Collins Concise English Dictionary © HarperCollins Publishers:: tungsten lamp n - a lamp in which light is produced by a tungsten filament heated to incandescence by an electric current. The glass bulb enclosing the filament contains a low pressure of inert gas, usually argon. Sometimes small amounts of a halogen, such as iodine, are added to improve the intensity (tungsten-halogen lamp)
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