phaseout

/ˈfeɪzˌaʊt/
verb
  1. To gradually remove or discontinue something over a period of time.
    • Many countries are phasingout leaded gasoline to reduce pollution.
    • The school plans to phaseout paper report cards and switch to an online system.
    • The store will phaseout its loyalty card program at the end of the month.
noun
  1. The gradual removal or discontinuation of something over a period of time.
    • The government's phaseout of coal-fired power plants is part of a new climate policy.
    • Teachers are preparing for the phaseout of the old textbook series next year.
    • The company announced a phaseout of all single-use plastics by 2030.