ryo
/rɪˈəʊ/(also rio, riyo)
noun
A former Japanese monetary unit with a standard weight of 4.76 momme (approx. 18 grams), based on a unit of weight of precious metals (varying between 4 and 5 momme).
- The weight-based monetary system to which the ryo belongs was replaced in 1871 by a coinage-based system: see yen..
Origin
Mid 19th century. From Japanese ryō (earlier ryau, riyau) former unit of weight and monetary unit from Middle Chinese.
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