Where does “фисташковый” come from?

фисташковый (Russian) comes from Russian фиста́шка, from Ottoman Turkish فستق, from Persian فستق, from Arabic فِسْتَق, from Middle Persian pstk', from Old Persian *pistaka.

фисташковый (Russian): pistachio

Definitions

pistachio

Ancestry of “фисташковый”, step by step

Step	Language	Word	Meaning
1	Russian	фиста́шка	pistachio
2	Ottoman Turkish	فستق	pistachio, the nutlike fruit produced by any tree in the species Pistacia vera
3	Persian	فستق	—
4	Arabic	فِسْتَق	—
5	Middle Persian	pstk'	pistachio nut
6	Old Persian	*pistaka	—

Every word from Old Persian *pistaka →Every word from Middle Persian pstk' →Every word from Arabic فِسْتَق →