Adjacent Words

lightbulb definitions

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WordNet (r) 3.0 (2005)

n
1: electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity [syn: light bulb, lightbulb, bulb, incandescent lamp, electric light, electric-light bulb]

Merriam Webster's

noun Date: 1884 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