Where does “ambrum” come from?

ambrum (Latin) comes from Latin ambrosia, from Ancient Greek ἀμβροσία, from Ancient Greek ἄμβροτος, from Proto-Indo-European n̥mr̥tós, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

ambrum (Latin): amber; ambergris

Definitions

amber; ambergris

Ancestry of “ambrum”, step by step

Step	Language	Word	Meaning
1	Latin	ambrosia	The food of the gods; ambrosia; The unguent of...
2	Ancient Greek	ἀμβροσία	ambrosia
3	Ancient Greek	ἄμβροτος	immortal, divine; belonging to the gods
4	Proto-Indo-European	n̥mr̥tós	immortal
5	Proto-Indo-European	n̥-	not, un-
6	Proto-Indo-European	ne	not

Every word from Proto-Indo-European ne →Every word from Proto-Indo-European n̥- →Every word from Proto-Indo-European n̥mr̥tós →