Where does “astrein” come from?

astrein (German) comes from German Rein, from Middle High German reine, from Old High German reini, from Proto-West Germanic hrainī, from Proto-Germanic hrainiz, from Proto-Indo-European króy-n-is, from Proto-Indo-European krey- — to sift, separate, divide.

astrein (German): free of knotholes; cool, excellent

Definitions

  1. free of knotholes; cool, excellent

Ancestry of “astrein”, step by step

astrein traces back through two separate lines of ancestry.

via German Rein

StepLanguageWordMeaning
1GermanReinpure, clear, plain
2Middle High Germanreine—
3Old High Germanreini—
4Proto-West Germanichrainīclean; pure
5Proto-Germanichrainizclean, not dirty; pure; innocent
6Proto-Indo-Europeankróy-n-is—
7Proto-Indo-Europeankrey-to sift, separate, divide

via German ast

StepLanguageWordMeaning
1Germanastbough, limb, branch
2Middle High Germanast—
3Old High Germanastbranch
4Proto-Germanicastazbranch
5Proto-Indo-Europeanh₃ósdosbranch
Every word from Proto-Indo-European krey- →Every word from Proto-Indo-European króy-n-is →Every word from Proto-Germanic hrainiz →