English
fluorescent lamp
From fluorescent (adjective) + lamp (noun).
A compound of fluorescent + lamp
Proto-Indo-European *leh₂p- ‘to shine’
…
Latin lampas ‘torch, lamp, light’
Late Latin lampada
Old French lampe ‘lamp, light’
Middle English laumpe ‘a lamp or light’
English lamp
Today it means
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.
Language periods are conventional ranges, not dates for this word.
Etymograph / fluorescent lamp