-onium

== English == === Etymology === From onium or -on +‎ -ium. === Suffix === -onium (particle physics) Designating an onium particle. (chemistry) Used to form the name of polyatomic cations. Common examples are quaternary ammonium compounds used as neuromuscular blocking agents, cholinergic agents, anticholinergic agents, antibacterials/antiseptics, or other agents. Alternative form: -ium ==== Derived terms ==== === References === IUPAC Gold Book: onium compounds == French == === Pronunciation === IPA(key): /ɔ.njɔm/ === Suffix === -onium -onium ==== Derived terms ====