English
luminously
From luminous + -ly.
A compound of luminous + -ly
Proto-Indo-European *lewk- ‘bright’
…
Proto-Italic *louksmən
Latin lūmen ‘light’
Latin lūminōsus ‘bright, luminous, full of light’
Middle French lumineus
English luminous
Today it means
adv In a luminous manner, brightly, glowingly.
Language periods are conventional ranges, not dates for this word.
Etymograph / luminously