Where does “luminousness” come from?

luminousness (English) comes from English luminous, from Middle French lumineus, from Latin luminosus, from Latin lūmen, from English -escence, from Latin -escens, from Latin -esco, from Latin -eo — Creates transitive imperfective verbs from roots.

luminousness (English): The quality of being luminous

Definitions

  1. The quality of being luminous

Ancestry of “luminousness”, step by step

luminousness traces back through two separate lines of ancestry.

via English luminous

StepLanguageWordMeaning
1EnglishluminousEmitting light; glowing brightly; Brightly...
2Middle Frenchlumineus
3Latinluminosusbright, luminous, full of light
4Latinlūmenlight, source of light
5English-escencea specified process or state
6Latin-escens
7Latin-escoForms verbs from adjectives meaning "become "
8Latin-eoForms stative verbs from adjectives; dative...
9Proto-Italic-ēōForms stative verbs, indicating a state of being;...
10Proto-Italic-ējō
11Proto-Indo-European-éh₁yetiThematicization of the athematic stative verbal...
12Proto-Indo-European-yetiCreates transitive imperfective verbs from roots

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European -yeti