Etymology

lux

L1U1X8

Today it means: In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx Full definition →

Latin lūx ← Proto-Indo-European *lewk-
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lux · noun1

  1. Proto-Indo-European · derived from*lewk-“white; light; bright”
  2. Latin · borrowed fromlūx“light”
  3. English todaylux

Borrowed from Latin lūx (“light”), from Proto-Indo-European *lewk- (“white; light; bright”). Cognates include Ancient Greek λευκός (leukós, “white, blank, light, bright, clear”), Ancient Greek λύκη (lúkē, “light, morning twilight”), Sanskrit रोचते (rocate), Middle Persian 𐭩𐭥𐭬 (rōz, “day”) and Old English lēoht (noun) (English light).

lux · verb2

Compare French luxer. See luxate.

Words from the same roots

Latinlūx all →

luxonluciformlucigenlucigeninlucigraphlucimeterlucule

Proto-Indo-European*lewk- all →

lowlightlighterlunarlynxmoonlightlevinillustriouslumelucidatealightluminarylownillumineleamlosselimnpellucidluminationsublunary

Etymology from Wiktionary, CC BY-SA 4.0.