The story
- Proto-Indo-European*h₂ews-
- Proto-Indo-European*h₂ewsér
- Proto-Hellenic*auhḗr
- Ancient Greekᾱ̓ήρ (āḗr)
- Ancient Greekἀέρος (aéros)
- Englishaero-
- Ancient Greekστᾰτῐκός (stătĭkós)
- Latinstaticus
- Englishstatic
- Englishaerostatic
- English todayaerostatically
From aerostatic + -ally.
Etymology from Wiktionary, CC BY-SA 4.0.