Dictionary
lightbulb
noun light·bulb \ˈlīt-ˌbəlb\
Definition of LIGHTBULB
: an electric lamp: as a : one in which a filament gives off light when heated to incandescence by an electric current —called also incandescent, incandescent lamp b : fluorescent lamp
See lightbulb defined for kids Variants of LIGHTBULB
light·bulb or light bulb
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Illustration of LIGHTBULB
First Known Use of LIGHTBULB
1884
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