Where does “Zerfallsreihe” come from?

Zerfallsreihe (German) comes from German Zerfall, from German zerfallen, from German fällen, from Middle High German vellen, from Old High German fellen, from Proto-Germanic *fallijan, from Proto-Germanic fallijaną, from Proto-Germanic fallaną — to split off, separate; to chop, to separate.

Zerfallsreihe (German): decay chain / decay series

Definitions

  1. decay chain / decay series

Ancestry of “Zerfallsreihe”, step by step

Zerfallsreihe traces back through two separate lines of ancestry.

via German Zerfall

StepLanguageWordMeaning
1GermanZerfalldisintegration; decay
2Germanzerfallento disintegrate; to decay
3Germanfällento cut down, to fell; to precipitate; to make
4Middle High Germanvellen
5Old High Germanfellen
6Proto-Germanic*fallijan
7Proto-Germanicfallijanąto cause to fall, to fell
8Proto-Germanicfallanąto fall
9Proto-Indo-Europeanpōl-
10Slovincianpólhalf
11Proto-Slavicpolъside, flank; half; member of a pair of options →...
12Proto-Indo-European(s)pelH-to split off, separate; to chop, to separate

via German Reihe

StepLanguageWordMeaning
1GermanReiherow; rank, succession, series, sequence, range;...
2Middle High Germanrīherow, line, corridor
3Old High Germanrigaline
4Proto-Germanicrīgǭrow, line
5Proto-Indo-Europeanh₁reyk-to scratch, cut
Every word from Proto-Indo-European (s)pelH-Every word from Proto-Slavic polъEvery word from Slovincian pól