けいこうとう蛍光灯keikoutou
1.
A type of lighting device that emits visible light through a gas-discharge process, converting ultraviolet radiation produced by mercury vapor into bright illumination, often used in commercial and residential settings for its energy efficiency and lower heat output.
2.
A specific kind of lamp characterized by its use of a glass tube coated with fluorescent material, which glows when energized, providing a distinct alternative to traditional incandescent bulbs.
3.
Historically referred to individuals who respond slowly or with delay, derived from early fluorescent lamps that took time to warm up before producing light.
Example:
蛍光灯がチカチカしてるな。新しいのと交換しないとダメかな。