Illustration of light bulb
- 1 bulb containing gas
- 2 filament
- 3 connecting and supporting wires
- 4 exhaust tube
- 5 screw base
- 6 base contact
light bulb
noun
variants
or lightbulb
plural light bulbs or lightbulbs
: an electric lamp: such as
a
: one in which a filament gives off light when heated to incandescence by an electric current
called also incandescent, incandescent lamp
b
: one having a coating of fluorescent material on its inner surface that emits visible light : fluorescent lamp
especially
: compact fluorescent light
c
: one using LEDs to generate light
Examples of light bulb in a Sentence
Recent Examples on the Web
For example, Thomas Edison failed many times before inventing the light bulb.
—
Gabby Ben, The Mercury News, 20 June 2024
At The Body Shop, Gen Zers have been invited to the board room to share their light bulb moments with management, give input on projects in the works, and, crucially, make the brand attractive to the next generation of customers.
—Marco Quiroz-Gutierrez, Fortune, 19 June 2024
To detach can lights from your ceiling to properly clean the baffle (the baffle is the conical cover typically found on recessed lighting fixtures) and the can light's housing:
Remove the light bulb.
—Maryal Miller Carter, USA TODAY, 14 Apr. 2024
In the final scramble to get everything ready for the grand reveal, the crew had forgot to install light bulbs in all of the rooms.
—Stacey Lastoe, Condé Nast Traveler, 15 June 2023
See all Example Sentences for light bulb 
Gabby Ben, The Mercury News, 20 June 2024
At The Body Shop, Gen Zers have been invited to the board room to share their light bulb moments with management, give input on projects in the works, and, crucially, make the brand attractive to the next generation of customers.
—Marco Quiroz-Gutierrez, Fortune, 19 June 2024
To detach can lights from your ceiling to properly clean the baffle (the baffle is the conical cover typically found on recessed lighting fixtures) and the can light's housing:
Remove the light bulb.
—Maryal Miller Carter, USA TODAY, 14 Apr. 2024
In the final scramble to get everything ready for the grand reveal, the crew had forgot to install light bulbs in all of the rooms.
—Stacey Lastoe, Condé Nast Traveler, 15 June 2023
See all Example Sentences for light bulb
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'light bulb.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Light bulb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20bulb. Accessed 7 Jul. 2024.
Copy CitationKids Definition
lightbulb
noun
light·bulb
ˈlīt-ˌbəlb 
: an electric lamp: as
a
: one in which a filament gives off light when heated by an electric current
called also incandescent lamp
b
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