echoacoustic

Etymology tree
Proto-Indo-European *sweh₂gʰ-der.
Proto-Hellenic *wākʰā́
Ancient Greek ἠχή (ēkhḗ)
Proto-Indo-European *-ṓy
Ancient Greek -ώ (-ṓ)
Ancient Greek ἠχώ (ēkhṓ)bor.
Latin ēchō
Medieval Latin ēccōbor.
Middle English eccho
English echo
Proto-Indo-European *h₂eḱ-
Proto-Indo-European *h₂ew-
Proto-Indo-European *-s
Proto-Indo-European *h₂ṓws
Proto-Indo-European *-yéti
Proto-Indo-European *h₂ḱh₂owsyéti
Proto-Hellenic *akóuhō
Ancient Greek ἀκούω (akoúō)
Proto-Indo-European *-kos
Ancient Greek -κός (-kós)
Ancient Greek -ῐκός (-ĭkós)
Ancient Greek ᾰ̓κουστῐκός (ăkoustĭkós)bor.
Medieval Latin acousticusbor.
English acoustic
English echoacoustic
From echo + acoustic.