fluorescent lamp
noun
- lamp in which light is produced by fluorescence
Wiktionary
noun
Etymology: From fluorescent (adjective) + lamp (noun).
- A gas-discharge lamp that uses fluorescence to produce visible light, especially one consisting of a tube filled with mercury vapour which emits ultraviolet radiation when an electric current is passed through it, causing fluorescence when the radiation hits a phosphor coating on the interior of the tube.