Where does “Nanobakterium” come from?

Nanobakterium (German) comes from German bakterium, from New Latin bactērium, from Ancient Greek βακτήριον, from Ancient Greek βακτηρία, from Proto-Indo-European baḱ- — club, pointed stick, peg; pointed stick, peg.

Nanobakterium (German): nanobacterium

Definitions

nanobacterium

Ancestry of “Nanobakterium”, step by step

Step	Language	Word	Meaning
1	German	bakterium	bacterium
2	New Latin	bactērium	—
3	Ancient Greek	βακτήριον	Synonym of βακτηρία
4	Ancient Greek	βακτηρία	rod, staff, cane; baton
5	Proto-Indo-European	baḱ-	club, pointed stick, peg; pointed stick, peg

Every word from Proto-Indo-European baḱ- →Every word from Ancient Greek βακτηρία →Every word from Ancient Greek βακτήριον →