quinidine quinidia • quinin · · · Info · Definitions · Synonyms · Characters · · quinidine · · Text Latin · · Script 9 · · Length Definitions · · · (noun) cardiac drug (trade names Quinidex and Quinora) used to treat certain heart arrhythmias. Synonyms: Quinidex, Quinora. · · Noun Definition 1 Synonyms · · · quinidex · · Synonym 1 quinora · · Synonym 2 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E q latin small letter q U+0071 u latin small letter u U+0075