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Light bulb
/ˈlaɪtˌbʌlb/
An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
📖 Definitions of "Light bulb"
noun
- 1
An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
- 2
(by extension) An article that resembles such a bulb and converts electricity to light by any process.
"a fluorescent light bulb"
- 3
Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like.
"a light bulb moment"
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