Where does “kjarnakljúfur” come from?

kjarnakljúfur (Icelandic) comes from Icelandic kjarni, from Old Norse kjarni, from Proto-Germanic kernô, from Proto-Indo-European ǵr̥h₂nóm, from Proto-Indo-European ǵr̥h₂nós, from Proto-Indo-European ǵerh₂- — to grow old, to mature.

kjarnakljúfur (Icelandic): nuclear reactor

Definitions

  1. nuclear reactor

Ancestry of “kjarnakljúfur”, step by step

kjarnakljúfur traces back through two separate lines of ancestry.

via Icelandic kjarni

StepLanguageWordMeaning
1Icelandickjarnicore, essence, nucleus; kernel; nucleus
2Old Norsekjarnikernel, core; core
3Proto-Germanickernôkernel, core
4Proto-Indo-Europeanǵr̥h₂nómgrain
5Proto-Indo-Europeanǵr̥h₂nósmatured, grown old
6Proto-Indo-Europeanǵerh₂-to grow old, to mature

via Icelandic kljúfur

StepLanguageWordMeaning
1Icelandickljúfur—
Every word from Proto-Indo-European ǵerh₂- →Every word from Proto-Indo-European ǵr̥h₂nós →Every word from Proto-Indo-European ǵr̥h₂nóm →