quinidine

== English == === Etymology === From Spanish quina +‎ -idine. === Pronunciation === IPA(key): /ˈkwɪn.ɪ.diːn/ === Noun === quinidine (countable and uncountable, plural quinidines) (organic chemistry, pharmacology) A compound obtained from cinchona bark and used to treat irregularities of heart rhythm. It is an isomer of quinine. ==== Translations ==== === References === “quinidine”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022. “quinidine”, in Merriam-Webster.com Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.