Question

Where does the name Judaism come from?

Answer 1

Iudaismus, a Latinized form of the Ancient Greek Ioudaismos

Answer 2

The term Judaism derives from Iudaismus, a Latinized form of the Ancient Greek Its ultimate source was the Hebrew יהודה, Yehudah, "Judah", which is also the source of the Hebrew term for Judaism: יַהֲדוּת, Yahadut.