legalisation

/L IY0 G AE1 L AH0 Z EY1 SH AH0 N/
noun
  1. 1

    The process of making something legal, the process to legalize, decriminalization.

    โ€œThe hippies marched for the legalization of marijuana.โ€

Source: https://en.wiktionary.org/wiki/legalisation, https://en.wiktionary.org/wiki/legalization