Where does “заҳршинос” come from?

заҳршинос (Tajik) comes from Tajik заҳр, from Arabic زَهْر, from Ancient Greek τέσσερα, from Ancient Greek τέσσᾰρᾰ, from Ancient Greek τέσσᾰρες, from Proto-Hellenic kʷétwores, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

заҳршинос (Tajik): toxicologist

Definitions

toxicologist

Ancestry of “заҳршинос”, step by step

Step	Language	Word	Meaning
1	Tajik	заҳр	poison; venom
2	Arabic	زَهْر	cube, die; dice; the dice
3	Ancient Greek	τέσσερα	four
4	Ancient Greek	τέσσᾰρᾰ	four
5	Ancient Greek	τέσσᾰρες	four
6	Proto-Hellenic	kʷétwores	cardinal...
7	Proto-Indo-European	kʷetwóres	four
8	Proto-Indo-European	kʷe-	and

Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Hellenic kʷétwores →