decimalization
noun(British English also decimalisation)
[uncountable]the process of changing a system of coins or weights and measurements to a decimal system 把（币制或度量衡）改为十进制 CultureThe decimalization of the British currency to the present decimal system of 100 pence to the pound happened on 15 February 1971. Before that date, the pound was divided into 20 shillings with 12 pence in each shilling.