light bulb
/ˈlaɪtˌbʌlb/ noun
Forms light bulbs light-bulb lightbulb
- noun An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.
- noun (by extension) An article that resembles such a bulb and converts electricity to light by any process. “a fluorescent light bulb”
- noun (figuratively) Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like. “a light-bulb moment”
Synonyms
bulb glow-lamp incandescent lamp light globe lightbulb electric light electric-light bulb
Etymology
From light + bulb First attested in 1885.
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “light bulb”, CC BY-SA 4.0. Details