Light Bulb Definition

noun
A light-emitting device that consists of a gas-filled glass tube or bulb and is used inside electric light fixtures and flashlights.
American Heritage

An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.

Wiktionary
(by extension) An article that resembles such a bulb and converts electricity to light by any process.
A fluorescent light bulb or an LED light bulb.
Wiktionary
(figuratively) Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like.
Wiktionary
Synonyms:

Other Word Forms of Light Bulb

Noun

Singular:
light bulb
Plural:
light-bulbs

Origin of Light Bulb

  • light + bulb, from Middle French bulbe, from Latin bulbus (“bulb, onion"), from Ancient Greek βολβός (bolbos, “plant with round swelling on underground stem").

    From Wiktionary

Find Similar Words

Find similar words to light bulb using the buttons below.

Words Starting With

Words Ending With

Unscrambles

light bulb