Where does “pomum de ambra” come from?

pomum de ambra (Medieval Latin) comes from Latin ambra, from Ancient Greek ἄμβροτος, from Proto-Indo-European n̥mr̥tós, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

Ancestry of “pomum de ambra”, step by step

StepLanguageWordMeaning
1Latinambraamber; ambergris
2Ancient Greekἄμβροτοςimmortal, divine; belonging to the gods
3Proto-Indo-Europeann̥mr̥tósimmortal
4Proto-Indo-Europeann̥-not, un-
5Proto-Indo-Europeannenot

Words derived from “pomum de ambra

Every word from Proto-Indo-European neEvery word from Proto-Indo-European n̥-Every word from Proto-Indo-European n̥mr̥tós