lightbulb
UK: ˈlaɪt.bʌlb | US: ˈlaɪt.bʌlb
n. an electric device consisting of a transparent or translucent glass housing containing a wire filament or other material that emits light when heated by electricity
The word "lightbulb" is a compound of "light" (from Old English lēoht, meaning "brightness" or "illumination") and "bulb" (from Latin bulbus, meaning "rounded swelling" or "plant bulb"). The term emerged in the late 19th century with the invention of electric lighting, combining the concept of light emission with the bulb-shaped glass enclosure that housed the filament. This reflects the functional design of early incandescent lamps, where the bulb protected the filament and diffused the light.
She replaced the broken lightbulb in the hallway.
Thomas Edison is often credited with inventing the modern lightbulb.
The lightbulb flickered before finally turning on.
Energy-efficient LED lightbulbs last longer than traditional incandescent ones.
A sudden power surge blew out all the lightbulbs in the house.