Where does “thiopentone” come from?

thiopentone (English) comes from English pentone, from English One, from Middle English on, from Old English on, from Proto-West Germanic ana, from Proto-Germanic *an, from Proto-Germanic ana, from Proto-Indo-European h₂en- — on, onto.

Ancestry of “thiopentone”, step by step

StepLanguageWordMeaning
1Englishpentonevalylene
2EnglishOneThe number represented by the Arabic numeral 1; the numerical value equal to that cardinal number
3Middle Englishonon, in; on; Alternative form of oon
4Old Englishonon, in, at, among; from
5Proto-West Germanicanaon
6Proto-Germanic*an
7Proto-Germanicanaon, at; on, onto; ana
8Proto-Indo-Europeanh₂en-on, onto
Every word from Proto-Indo-European h₂en-Every word from Proto-Germanic anaEvery word from Proto-Germanic *an
thiopentone — Etymology, Origin & Word History | Etymology Explorer