Where does “arsenical” come from?
arsenical (Spanish) comes from Spanish arsénico, from Latin arsenicum, from Ancient Greek ἀρσενικόν, from Middle Persian zarnīk, from Avestan 𐬰𐬀𐬭𐬀𐬥𐬌𐬌𐬀, from Proto-Indo-European ǵʰelh₃i.
arsenical (Spanish): arsenical
Ancestry of “arsenical”, step by step