Light Bulb Definition
noun
A light-emitting device that consists of a gas-filled glass tube or bulb and is used inside electric light fixtures and flashlights.
American Heritage
An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
Wiktionary
(by extension) An article that resembles such a bulb and converts electricity to light by any process.
A fluorescent light bulb or an LED light bulb.
Wiktionary
(figuratively) Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like.
Wiktionary
Synonyms:
- electric light bulb
- electric light
- incandescent-lamp
- bulb
- lightbulb
Other Word Forms of Light Bulb
Noun
Singular:
light bulb
Plural:
light-bulbsLight Bulb Is Also Mentioned In
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