nanoworld

The story

1. Ancient Greekνᾶνος (nânos)
2. Latinnānus
3. Englishnano-
4. Proto-Indo-European*weyh₁-?
5. Proto-Indo-European*wiHrós
6. Proto-Germanic*weraz
7. Proto-Indo-European*h₂el-
8. Proto-Indo-European*h₂életi
9. Proto-Germanic*alaną
10. Proto-Germanic*aldiz
11. Proto-Germanic*weraldiz
12. Proto-West Germanic*weraldi
13. Old Englishweorold
14. Middle Englishworld
15. Englishworld
16. English todaynanoworld

From nano- + world.