Where does “light-bulb moment” come from?

light-bulb moment (English) comes from English moment, from Middle English moment, from Old French moment, from Latin mōmentum, from Latin mōvimentum, from Latin -mentum, from Latin -menta, from Proto-Indo-European -mn̥ — Creates action nouns or result nouns from verbs.

light-bulb moment (English): A moment of enlightenment, inspiration or sudden realization

Definitions

  1. A moment of enlightenment, inspiration or sudden realization

Ancestry of “light-bulb moment”, step by step

light-bulb moment traces back through two separate lines of ancestry.

via English moment

StepLanguageWordMeaning
1EnglishmomentA brief, unspecified amount of time; The smallest...
2Middle Englishmoment
3Old Frenchmoment
4Latinmōmentummovement, motion, impulse; course
5Latinmōvimentummovement
6Latin-mentuminstrument, medium, or result of; e.g....
7Latin-mentanominative plural of -mentum; accusative plural...
8Proto-Indo-European-mn̥Creates action nouns or result nouns from verbs

via English light bulb

StepLanguageWordMeaning
1Englishlight bulbAn evacuated glass bulb containing a metal...
2EnglishLightA place name
3Middle EnglishlightThe radiation which allows for vision by...
4Old Englishlēohtluminous, bright, light, clear, resplendent,...
5Proto-West Germanicleuhtlight, bright; light
6Proto-Germanicleuhtąlight
7Proto-Indo-Europeanlewktom
8Proto-Indo-Europeanlewk-bright; to shine; to see
Every word from Proto-Indo-European -mn̥Every word from Latin -mentumEvery word from Latin mōvimentum
light-bulb moment — Etymology, Origin & Word History | Etymology Explorer