Where does “زہر” come from?

زہر (Urdu) comes 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.

زہر (Urdu): poison; venom

Definitions

poison; venom

Ancestry of “زہر”, step by step

زہر traces back through two separate lines of ancestry.

via Arabic زَهْر

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

via Classical Persian زَهر

Step	Language	Word	Meaning
1	Classical Persian	زَهر	—

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