finalize
verb [ T ]
( UK also finalise) uk/ˈfaɪnəlaɪz/ usto stop making changes to a plan, date, agreement, etc. and make a final decision about it:
Although details are still being finalized, the deal is expected to go through next month.
finalize plans/arrangements
finalize a deal/an agreement
finalization
noun [ U ] ( UK also finalisation) /ˌfaɪnəlaɪˈzeɪʃən/
De Beers said finalization of its trade agreement with the country has been delayed by the political situation.