Where does “heavywater” come from?

heavywater (English) comes from English water, from Middle English water, from Old English wæter, from Proto-West Germanic watar, 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;...

Ancestry of “heavywater”, step by step

heavywater traces back through two separate lines of ancestry.

via English water

StepLanguageWordMeaning
1EnglishwaterA substance found at room temperature and...
2Middle Englishwaterwater; water vapour, condensation; lake, pond,...
3Old Englishwæterwater
4Proto-West Germanicwatarwater
5Proto-Germanicwatōrwater
6Proto-Indo-Europeanwódr̥water
7Proto-Indo-Europeanwed-water
8Proto-Indo-Europeanwey-to wither; fade; to move, go ahead; to be strong;...

via English heavy

StepLanguageWordMeaning
1EnglishheavyHaving great weight; Serious, somber; Not easy to...
2EnglishheaveTo lift with difficulty; to raise with some...
3Middle EnglishhevenTo raise, lift, heave; Alternative form of haven
4Old Englishhebbanto lift, raise
5Proto-West Germanichabbjanto have; to lift
6Proto-Germanichabjanąto have, to hold; to lift, heave
7Proto-Indo-Europeankh₂pyé-
8Proto-Indo-Europeankeh₂p-to seize, grab; to seize; take up; lift; to take,...
Every word from Proto-Indo-European wey-
heavywater — Etymology, Origin & Word History | Etymology Explorer