Where does “Ceresium” come from?

Ceresium (Translingual) comes from Late Latin ceresium, from Latin cerasium, from Ancient Greek κεράσιον, from Ancient Greek κερασός, from Akkadian ???? — pear-tree.

Ceresium (Translingual): genus

Definitions

genus

Ancestry of “Ceresium”, step by step

Step	Language	Word	Meaning
1	Late Latin	ceresium	—
2	Latin	cerasium	cherry, fruit of the cherry tree
3	Ancient Greek	κεράσιον	cherry; cherry tree
4	Ancient Greek	κερασός	bird cherry, "Prunus avium"
5	Akkadian	????	pear-tree

Every word from Akkadian ???? →Every word from Ancient Greek κερασός →Every word from Ancient Greek κεράσιον →