English word acoustic comes from Proto-Indo-European *h₂eḱst-, Proto-Indo-European *h₂ṓws (Ear.), Proto-Indo-European *-yéti, Proto-Indo-European *h₂ows-, Proto-Indo-European *yé-, Ancient Greek ακουστικός
| Dictionary entry | Language | Definition |
|---|---|---|
| *h₂eḱst- | Proto-Indo-European (ine-pro) | |
| *h₂ṓws | Proto-Indo-European (ine-pro) | Ear. |
| *-yéti | Proto-Indo-European (ine-pro) | Creates intransitive, often deponent, imperfective verbs from roots. |
| *h₂ows- | Proto-Indo-European (ine-pro) | |
| *yé- | Proto-Indo-European (ine-pro) | |
| ακουστικός | Ancient Greek (grc) | |
| *h₂ḱh₂owsyéti | Proto-Indo-European (ine-pro) | To be sharp-eared, to hear well. |
| *akouyō | Proto-Hellenic (grk-pro) | To hear. |
| ἀκούω | Ancient Greek (grc) | |
| ἀκουστικός | Ancient Greek (grc) | |
| acoustique | French (fra) | Acoustics Acoustic (pertaining to hearing or the science of sounds). |
| acoustic | English (eng) | (medicine) A medicine or other agent to assist hearing. (music) Naturally producing or produced by an instrument without electrical amplification, as an acoustic guitar or acoustic piano.. Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. |