Definition of "decimalisation"

decimalisation

/ˌdɛsɪməlaɪˈzeɪʃən/

noun
usually uncountable, plural decimalisations
1. Conversion to a decimal system.
  Quotations
  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 April 30, “Research by Experiment”, in Nature, volume 230, number 5296, 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).