Etymograph

English

equilux

Equilux comes from Latin lux ‘light’, from Proto-Indo-European *léwks ‘something bright, white’, and ultimately from *lewk-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*lewk-1‘bright’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*léwks1‘something bright, white’reconstructed
  3. Proto-Italicc. 1500–700 BCE*louks1‘light’reconstructed
  4. Latinc. 75 BCE–200 CElux2‘light’
  5. Englishtodayequilux2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin lux
  2. 2 Wiktionary, English equilux

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*lewk-Wiktionary, Latin lux‘bright’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*léwksWiktionary, Latin lux‘something bright, white’reconstructed
  3. Proto-Italicc. 1500–700 BCE*louksWiktionary, Latin lux‘light’reconstructed
  4. Latinc. 75 BCE–200 CEluxWiktionary, English equilux‘light’
  5. EnglishtodayequiluxWiktionary, English equilux

Linked words

through Proto-Indo-European *lewk- ‘bright’

light, low, link, los, ounce, lea, lunar, luna, illumination, lynx, translucent, luminous, lucid, illuminate, lumen, luminosity, lumia, lucerne, leucine, lucent, lum, luminescent, lune, luminary, luminal, 71 more

through Proto-Indo-European *léwks ‘something bright, white’

loach, 10 more

through Latin lux ‘light’

lucy, lux, luce, 10 more

Today it means

noun An isophot.

Sources

Sources: Wiktionary, “equilux”; the older steps come from the Wiktionary entry for Latin lux. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *lewk- / equilux

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