-oan

suffix

Etymology: Etymology tree 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 Suffixal construction from -o(us) + -an.

1. Used to convert the name of an atom or ion to an adjective that means containing cations or anions of that atom or ion.

   “bismuth + -oan → bismuthoan (“containing trivalent bismuth”)”

   “cupro- (“copper”) + -oan → cuproan (“containing monovalent copper”)”