The story
- Proto-Indo-European*h₂ew-
- Proto-Indo-European*h₂ṓws
- Ancient Greekοὖς (oûs)
- Ancient Greekὠτ- (ōt-)
- Englishot-
- Englishoto-
- Proto-Indo-European*h₂eḱ-
- Proto-Indo-European*h₂ṓws
- Proto-Indo-European*h₂ḱh₂owsyéti
- Proto-Hellenic*akóuhō
- Ancient Greekἀκούω (akoúō)
- Ancient Greekᾰ̓κουστῐκός (ăkoustĭkós)
- Medieval Latinacousticus
- Englishacoustic
- Englishotoacoustic
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- English todayotoacoustically
From otoacoustic + -ally.
Etymology from Wiktionary, CC BY-SA 4.0.