English
luminometer
Luminometer comes from Latin lūminō ‘to illuminate’, from lūmen ‘light, source of light’, and ultimately from Proto-Indo-European *lewk- ‘bright’.
- Proto-Indo-Europeanc. 4500–2500 BCE*lewk-‘bright’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*léwksmn̥reconstructed
- Proto-Italicc. 1500–700 BCE*louksmənreconstructed
- Latinc. 75 BCE–200 CElūmen‘light, source of light’
- Latin, derivedc. 75 BCE–200 CElūminō‘to illuminate’
- Englishtodayluminometer
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*lewk-‘bright’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*léwksmn̥reconstructed
- Proto-Italicc. 1500–700 BCE*louksmənreconstructed
- Latinc. 75 BCE–200 CElūmen‘light, source of light’
- Latin, derivedc. 75 BCE–200 CElūminō‘to illuminate’
- Englishtodayluminometer
Formed from -meter
Linked words
through Proto-Indo-European *lewk- ‘bright’
light, low, link, los, lucy, ounce, lunar, lea, luna, lux, lucid, translucent, lynx, luce, loach, lune, leucine, lum, 77 more
through Latin lūmen ‘light, source of light’
lumen, lumia, luminosity, luminescent, 20 more
through Latin lūminō ‘to illuminate’
Today it means
noun photometer
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *lewk- / luminometer