Where does “ljósfræði” come from?

ljósfræði (Icelandic) comes from Icelandic ljós, from Old Norse ljós, from Proto-Germanic leuhsą, from Proto-Indo-European lewk-so-m, from Proto-Indo-European lewḱ-, from Proto-Indo-European lewk- — bright; to shine; to see.

ljósfræði (Icelandic): optics

Definitions

  1. optics

Ancestry of “ljósfræði”, step by step

ljósfræði traces back through two separate lines of ancestry.

via Icelandic ljós

StepLanguageWordMeaning
1Icelandicljósa light; a lighting; light
2Old Norseljósa burning light; light of the sun
3Proto-Germanicleuhsąlight
4Proto-Indo-Europeanlewk-so-m
5Proto-Indo-Europeanlewḱ-lynx
6Proto-Indo-Europeanlewk-bright; to shine; to see

via Icelandic fræði

StepLanguageWordMeaning
1Icelandicfræðiscience, studies; inflection of fræða: ##...
2Old Norsefrœði
3Proto-Germanicfrōdį̄wisdom, understanding
4Proto-Germanic-į̄-th
5Proto-Indo-European-íh₂
6Proto-Indo-European-h₂Creates collective nouns, which refer to groups...
Every word from Proto-Indo-European lewk-