IPA: /ˌdiːmənaɪˈzeɪʃən/
KK: /dɪˌmoʊnɪtaɪˈzeɪʃən/
The process of removing a currency's status as legal money, making it no longer acceptable for transactions.
The government's decision on demonetization caused a lot of confusion among the public.
Demonetization → It is formed from "de-" (meaning down or away) and "moneta" (from Latin, meaning coin or currency) and "-ization" (meaning the process of). The word refers to the process of removing the currency status from a particular form of money.
Think of 'removing' ('de-') the 'currency' ('moneta') status — that's what demonetization means.