The story
- Proto-Indo-European*h₂eḱ-
- Proto-Indo-European*h₂ew-
- Proto-Indo-European*h₂ṓws
- Proto-Indo-European*h₂ḱh₂owsyéti
- Proto-Hellenic*akóuhō
- Ancient Greekἀκούω (akoúō)
- Ancient Greekᾰ̓κουστῐκός (ăkoustĭkós)
- Medieval Latinacousticus
- Englishacoustic
- English todayacousto-
From international scientific vocabulary, reflecting a New Latin combining form, from acoustic; more at acoustic § Etymology.
Etymology from Wiktionary, CC BY-SA 4.0.