Where does “epicentrum” come from?

epicentrum (Dutch) comes from New Latin epicentrum, from Ancient Greek ἐπί, from Ancient Greek Ἡμέρα, from Ancient Greek ἦμαρ, from Proto-Hellenic ā́mər, from Proto-Indo-European h₂eh₃mr̥, from Proto-Indo-European h₂eh₃- — to be hot; to burn.

epicentrum (Dutch): epicentre, point above an earthquake's centre