the.com/privatisation

means The transfer of a business, industry, or service from government ownership into private hands.

from Built from 'private' (from Latin privatus, meaning 'withdrawn from public life, belonging to oneself,' from privare, 'to deprive or set apart') plus the '-ize/-ise' and '-ation' pattern that turns an adjective into a verb and then an action noun. The word itself is a 20th-century coinage, gaining real currency from the 1970s–80s onward as governments began selling off state-run industries and needed a tidy term for the process — the thing itself is ancient (rulers have always doled out public assets to private hands), but the word was manufactured to make the policy sound clean and technical.