Ackerrettich (German) comes from German Rettich, from Middle High German retich, from Old High German rātih, from Proto-Germanic *rādik, from Latin rādīx, from Proto-Italic wrādīks, from Proto-Indo-European wréh₂ds — root.
Ancestry of “Ackerrettich”, step by step
Ackerrettich traces back through two separate lines of ancestry.