兌だ換かん券けんだかんけんMeanings1nounconvertible banknotesHistorical financial term for banknotes that could be exchanged for specie (gold or silver). Now mainly used in historical or economic contexts.明めい治じ時じ代だいには兌だ換かん券けんが発はっ行こうされていた。Convertible banknotes were issued during the Meiji period.