Where does “tungtvatn” come from?

tungtvatn (Norwegian Nynorsk) comes from Norwegian Nynorsk vatn, from Old Norse vatn, from Proto-Germanic watōr, from Proto-Indo-European wódr̥, from Proto-Indo-European wed-, from Proto-Indo-European wey- — to wither; fade; to move, go ahead; to be strong;...

tungtvatn (Norwegian Nynorsk): heavy water

Definitions

  1. heavy water

Ancestry of “tungtvatn”, step by step

tungtvatn traces back through two separate lines of ancestry.

via Norwegian Nynorsk vatn

StepLanguageWordMeaning
1Norwegian Nynorskvatnwater; a lake; bodily fluid that looks like...
2Old Norsevatnwater; lake; waterway, river
3Proto-Germanicwatōrwater
4Proto-Indo-Europeanwódr̥water
5Proto-Indo-Europeanwed-water
6Proto-Indo-Europeanwey-to wither; fade; to move, go ahead; to be strong;...

via Norwegian Nynorsk tung

StepLanguageWordMeaning
1Norwegian Nynorsktungheavy; hard, difficult; tired, unwell
2Old Norseþungrheavy
3Proto-Germanicþunguzheavy
4Proto-Indo-Europeanténgʰus—
Every word from Proto-Indo-European wey- →Every word from Proto-Indo-European wed- →Every word from Proto-Indo-European wódr̥ →