Where does “bain tourbillon” come from?

bain tourbillon (French) comes from French tourbillon, from French -on, from Ancient Greek -ός, from Proto-Hellenic *-os, from Proto-Indo-European -ós — Creates agent nouns from verb stems, denoting...

Ancestry of “bain tourbillon”, step by step

bain tourbillon traces back through two separate lines of ancestry.

via French tourbillon

StepLanguageWordMeaning
1Frenchtourbillonwhirlwind; eddy, whirlpool; vortex
2French-onForming diminutives of things, including some...
3Ancient Greek-όςForms agentive or patientive adjectives and nouns from the o-grade of a verbal root
4Proto-Hellenic*-os
5Proto-Indo-European-ósCreates agent nouns from verb stems, denoting...

via French bain

StepLanguageWordMeaning
1Frenchbainbath
2Latinbāneumattested in Pompeii
3Latinbalneumbath, bathing place, bathroom
4Ancient Greekβαλανεῖονbath, bathing room; bathhouse
5Ancient Greekβᾰλᾰνεύςbath-man
Every word from Proto-Indo-European -ósEvery word from Ancient Greek -όςEvery word from French -on