The story
- Proto-Indo-European*ǵʰelh₃-
- Proto-Indo-European*ǵʰl̥h₃enyom
- Proto-Indo-Iranian*ȷ́ʰr̥Hanyam
- Proto-Iranian*jr̥Hanyam
- Old Median*zaranyam
- Old Median*kā
- Old Median*zaraniyakā
- Middle Persian*zarnīk
- Classical Syriacܙܪܢܝܟܐ (zarnīḵā)
- Arabicالزَرْنِيخ (az-zarnīḵ)
- Medieval Greekἀρσενικόν (arsenikón)
- Latinarsenicum
- Middle Frencharsenic
- Middle Englisharsenik
- Englisharsenic
- English todayarsine
From ars(enic) + -ine (“suffix used to form names of chemical substances”).
Etymology from Wiktionary, CC BY-SA 4.0.