The story
- Proto-Indo-European*sem-
- Proto-Indo-European*sēmi
- Latinsēmi-
- Englishsemi-
- Proto-Indo-European*megʰ-der.?
- Ancient Greekμηχανή (mēkhanḗ)
- Ancient Greekμηχανικός (mēkhanikós)
- Latinmēchanicus
- Old Frenchmecanique
- Middle Englishmechanic
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Middle Englishmechanical
- Englishmechanical
- English todaysemimechanical
From semi- + mechanical.
Etymology from Wiktionary, CC BY-SA 4.0.