Where does “Ҷидда” come from?

Ҷидда (Tajik) comes from Classical Persian جِدَّه, from Arabic جِدَّة.

Ancestry of “Ҷидда”, step by step

StepLanguageWordMeaning
1Classical Persianجِدَّه
2Arabicجِدَّة
Every word from Arabic جِدَّةEvery word from Classical Persian جِدَّه