light bulb
/ˈlaɪtˌbʌlb/
light bulb
English
Noun
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Definition
An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
Etymology
From light + bulb First attested in 1885.
Example Sentences
- "a fluorescent light bulb"
- "an LED light bulb"
- "a light-bulb moment"
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