köken: Inherited from Middle Persian (cf. Arabic بِجَادَق (bijādaq)), by surface analysis, بی (bi, “without”) + جاده (jâde, “road, (here: streak)”). Compare Old Georgian ბეჭედი (beč̣edi), Armenian պիճատի (pičati), Iranian borrowings.
982, Hudūd al-'Ālam و اندر بدخشان معدن سیم است و زر و بیجاده و لاجورد. va andar badaxšân ma'dan-i sêm ast u zar u bîjâde u lâjavard.