Where does “quelloffen” come from?

quelloffen (German) comes from German offen, from Middle High German offen, from Old High German offan, from Proto-West Germanic *opan, from Proto-Germanic upanaz, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

quelloffen (German): open-source

Definitions

  1. open-source

Ancestry of “quelloffen”, step by step

quelloffen traces back through two separate lines of ancestry.

via German offen

StepLanguageWordMeaning
1Germanoffenopen; frank, candid; honest, sincere
2Middle High Germanoffen—
3Old High Germanoffanopen; obvious; clear
4Proto-West Germanic*opanopen
5Proto-Germanicupanazopen
6Proto-Indo-Europeanupóunder, below
7Proto-Indo-Europeanh₃ewp-—

via German quelle

StepLanguageWordMeaning
1Germanquelleinflection of quellen: ## first-person singular...
2Middle High Germanquelle—
3Old High Germanquella—
4Proto-West Germanic*kwalljāwellspring; spring
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Germanic upanaz →