acoustomechanical

Etymology tree
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 acousto-
Proto-Indo-European *megʰ-der.?
Ancient Greek μηχανή (mēkhanḗ)
▲
Ancient Greek -ικός (-ikós)
Ancient Greek μηχανικός (mēkhanikós)bor.
Latin mēchanicusder.
Old French mecaniquebor.
Middle English mechanic
Proto-Indo-European *h₂el-der.?
Proto-Italic *-ālis
Latin -ālisbor.
Old French -albor.
▲
Latin -ālis
Old French -elbor.
▲
Latin -ālisbor.
Middle English -al
Middle English mechanical
English mechanical
English acoustomechanical
From acousto- + mechanical.