Where does “تجارت” come from?

تجارت (Ottoman Turkish) comes from Arabic تِجَارَة, from Arabic تَجَرَ.

Ancestry of “تجارت”, step by step

Step	Language	Word	Meaning
1	Arabic	تِجَارَة	commerce, trade
2	Arabic	تَجَرَ	—

تجارت — Etymology, Origin & Word History | Etymology Explorer