microdefect

The story

1. Proto-Indo-European*mey-der.?
2. Ancient Greekμῑκρός (mīkrós)
3. Ancient Greekμῑκρο- (mīkro-)
4. Englishmicro-
5. Proto-Indo-European*de
6. Proto-Indo-European*déh₁
7. Proto-Italic*dē
8. Latindē
9. Latinde-
10. Proto-Indo-European*dʰeh₁-
11. Proto-Indo-European*dʰeh₁k-
12. Proto-Indo-European*dʰh₁kyéti
13. Proto-Italic*θakjō
14. Proto-Italic*fakjō
15. Latinfacio
16. Latindēficiō
17. Latindēfectus
18. Englishdefect
19. English todaymicrodefect

From micro- + defect.