Where does “hafniom” come from?

hafniom (Cornish) comes from English hafnium, from Latin Hafnia, from Old Danish hafn, from Old Norse hǫfn, from Proto-Germanic habnō, from Proto-Indo-European kopno-.

hafniom (Cornish): hafnium

Definitions

hafnium

Ancestry of “hafniom”, step by step

Step	Language	Word	Meaning
1	English	hafnium	A chemical element with an atomic number of 72:...
2	Latin	Hafnia	Copenhagen
3	Old Danish	hafn	harbour, port
4	Old Norse	hǫfn	port, harbor, haven
5	Proto-Germanic	habnō	harbour, haven; harvour, haven
6	Proto-Indo-European	kopno-	—

Every word from Proto-Indo-European kopno- →Every word from Proto-Germanic habnō →Every word from Old Norse hǫfn →