Where does “Doktorarbeit” come from?

Doktorarbeit (German) comes from German arbeit, from Middle High German arbeit, from Old High German arbeit, from Proto-West Germanic arbaiþi, from Proto-Germanic arbaidiz, from Proto-Indo-European h₃órbʰos, from Proto-Indo-European h₃erbʰ- — to change allegiance, status, ownership;...

Doktorarbeit (German): A doctoral dissertation, a graduate's final...

Definitions

  1. A doctoral dissertation, a graduate's final...

Ancestry of “Doktorarbeit”, step by step

Doktorarbeit traces back through two separate lines of ancestry.

via German arbeit

StepLanguageWordMeaning
1Germanarbeittoil, regularly performed work, regularly pursued economic activity, labor, job, employment, occupation
2Middle High Germanarbeit
3Old High Germanarbeit
4Proto-West Germanicarbaiþihardship
5Proto-Germanicarbaidizlabour, work, toil; hardship, suffering
6Proto-Indo-Europeanh₃órbʰosorphan; servant, slave, worker
7Proto-Indo-Europeanh₃erbʰ-to change allegiance, status, ownership;...

via German Doktor

StepLanguageWordMeaning
1GermanDoktordoctor
2Latindoctorteacher, instructor; catechist
3Latin-tor-er
4Proto-Italic-tōrForms agent nouns to verb stems
5Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
6Proto-Indo-European-tor-s
Every word from Proto-Indo-European h₃erbʰ-Every word from Proto-Indo-European h₃órbʰosEvery word from Proto-Germanic arbaidiz