decimalisation

Etymology

From decimalise + -ation.

noun

1. Conversion to a decimal system.
   In these days of decimalization and metrication it is a pity that SI units were not used as this will date a very useful little book prematurely. 1971-04-30, “Research by Experiment”, in Nature, volume 230, number 5296, →DOI, page 603
2. Specifically, conversion of the currencies of the United Kingdom and Ireland in 1971 from pounds, shillings and pence to a decimal system in which one pound was worth 100 new pence (later renamed simply pence).