Where does “lightpath” come from?

lightpath (English) comes from English path, from Middle English path, from Old English pæþ, from Proto-West Germanic paþ, from Proto-Germanic paþaz, from Proto-Iranian pántaHh, from Proto-Indo-Iranian pántaHs, from Proto-Indo-European pent- — to pass; path.

lightpath (English): A section of an optical network in which light...

Definitions

  1. A section of an optical network in which light...

Ancestry of “lightpath”, step by step

lightpath traces back through two separate lines of ancestry.

via English path

StepLanguageWordMeaning
1EnglishpathA trail for the use of, or worn by, pedestrians;...
2Middle EnglishpathAn informal or unpaved path or trail; a track; A...
3Old Englishpæþpath
4Proto-West Germanicpaþpath
5Proto-Germanicpaþazpath
6Proto-IranianpántaHh
7Proto-Indo-IranianpántaHspath
8Proto-Indo-Europeanpent-to pass; path

via English Light

StepLanguageWordMeaning
1EnglishLightA place name
2Middle EnglishlightThe radiation which allows for vision by...
3Old Englishlēohtluminous, bright, light, clear, resplendent,...
4Proto-West Germanicleuhtlight, bright; light
5Proto-Germanicleuhtąlight
6Proto-Indo-Europeanlewktom
7Proto-Indo-Europeanlewk-bright; to shine; to see
Every word from Proto-Indo-European pent-