triarsenide

Etymology tree
Proto-Indo-European *tréyes
Proto-Indo-European *tri-
Proto-Italic *tri-
Latin tri-der.
English tri-
Proto-Indo-European *ǵʰelh₃-
Proto-Indo-European *ǵʰl̥h₃enyomder.
Proto-Indo-Iranian *ȷ́ʰr̥Hanyam
Proto-Iranian *jr̥Hanyam
Old Median *zaranyam
Old Median *kā
Old Median *zaraniyakāder.
Middle Persian *zarnīkbor.
Classical Syriac ܙܪܢܝܟܐ (zarnīḵā)der.
Arabic الزَرْنِيخ (az-zarnīḵ)bor.
Byzantine Greek ἀρσενικόν (arsenikón)der.
Latin arsenicumder.
Middle French arsenicbor.
Middle English arsenik
English arsenic
Proto-Indo-European *dʰeh₁-der.
Proto-Italic *-iðos
Latin -idusder.
English -ide
English arsenide
English triarsenide
From tri- + arsenide.