arsenoan

Etymology tree
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 *h₃ed-
Proto-Indo-European *-os
Proto-Indo-European *h₃édosder.?
Proto-Italic *-ōtsos or *-otsos
Latin -ōsus
Old French -usbor.
Middle English -ous
English -o(us)
Proto-Indo-European *-nós
Proto-Italic *-nos
Latin -nus
Latin -ānus
Old French -ainder.
Middle English -an
English -an
English -oan
English arsenoan
From arsenic + -oan.