The story
- Proto-Indo-European*h₂ékʷeh₂
- Proto-Italic*akʷā
- Latinaqua
- Middle Englishaqua
- Englishaqua-
- Proto-Indo-European*h₂ews-
- Proto-Indo-European*h₂ewsér
- Proto-Hellenic*auhḗr
- Ancient Greekἀήρ (aḗr)
- Proto-Indo-European*gʷeyh₃-
- Ancient Greekβίος (bíos)
- Frenchaérobie
- Englishaerobic
- English todayaquaerobic
Etymology from Wiktionary, CC BY-SA 4.0.