- a type of lamp in which an electrical gas discharge is maintained in a tube with a thin layer of phosphor on its inside surface. The gas, which is often mercury vapour, emits ultraviolet radiation causing the phosphor to fluoresce
WordReference Random House Learner's Dictionary of American English © 2026
fluo•res•cent lamp /flʊˈrɛsənt ˈlæmp/USA pronunciation n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- Electricitya long, tube-shaped electric lamp in which light is produced by the fluorescence of the coating of the inside of the tube.
fluores′cent lamp′,
- Electricitya tubular electric discharge lamp in which light is produced by the fluorescence of phosphors coating the inside of the tube.
- 1895–1900
Collins Concise English Dictionary © HarperCollins Publishers::
fluorescent lamp n
'fluorescent lamp' also found in these entries (note: many are not synonyms or translations):