The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*dwi-
- Proto-Hellenic*dwi-
- Ancient Greekδῐ- (dĭ-)
- Latindi-
- Englishdi-
- Proto-Indo-European*médʰu
- Proto-Hellenic*métʰu
- Ancient Greekμέθυ (méthu)
- Proto-Indo-European*swel-der.?
- Ancient Greekῡ̔́λη (hū́lē)
- GermanMethy
- Englishmethyl
- Englishmethyl-
- Englishsulfonio-
- Englishpropionic acid
- Englishpropionate
- English todaydimethylsulfoniopropionate
From di- + methyl- + sulfonio- + propionate.
Etymology from Wiktionary, CC BY-SA 4.0.