atomechanics

The story

1. Proto-Indo-European*né
2. Proto-Indo-European*n̥-
3. Proto-Hellenic*ə-
4. Ancient Greekἀ- (a-)
5. Proto-Indo-European*temh₁-
6. Ancient Greekτέμνω (témnō)
7. Ancient Greek*τομός (*tomós)
8. Ancient Greekἄτομος (átomos)
9. Latinatomu
10. Middle Frenchathome
11. Middle Englishattome
12. Englishatom
13. Proto-Indo-European*megʰ-der.?
14. Ancient Greekμηχανή (mēkhanḗ)
15. Ancient Greekμηχανικός (mēkhanikós)
16. Latinmēchanicus
17. Englishmechanics
18. English todayatomechanics

Blend of atom + mechanics.