phase·​out | \ ˈfāz-ˌau̇t How to pronounce phaseout (audio) \

Definition of phaseout

 (Entry 1 of 2)

: a gradual stopping (as in operations or production) : a closing down by phases

phase out

phased out; phasing out; phases out

Definition of phase out (Entry 2 of 2)

transitive verb

: to discontinue the practice, production, or use of by phases

intransitive verb

: to stop production or operation by phases

Examples of phaseout in a Sentence

Recent Examples on the Web: Noun

The federal tax credit for solar panels currently covers 30 percent of the total cost, though that incentive begins a multiyear phaseout starting on January 1st, 2020. Sean O'kane, The Verge, "Tesla launches a rental plan to help its slumping home solar panel business," 19 Aug. 2019 The announcement comes a few months after Psyonix was purchased by Epic, a company that announced a similar loot box phaseout for Fortnite: Save the World back in January. Kyle Orland, Ars Technica, "After Epic purchase, Psyonix removes random loot boxes from Rocket League," 7 Aug. 2019 Getting the lead out of gas In 1974, the EPA began a phaseout of lead from gasoline in the U.S., a process that completed in 1995. Brian Clark Howard, National Geographic, "49 environmental victories since the first Earth Day," 22 Apr. 2019 Alternatively, Xcel proposes to spend $2.7 billion for renewable wind and solar systems and the phaseout of the old coal plants. Dp Opinion, The Denver Post, "Letters: One small step for man began with giant leaps of faith of many (7/20/19)," 21 July 2019 Buzyn told Le Parisien newspaper that there would be a phaseout period before 2021. Washington Post, "Uber offers roomier 'comfort rides'," 10 July 2019 The budget funds the third year of a six-year car tax phaseout that will be completed in 2023. Edward Fitzpatrick,, "Raimondo signs the state budget, but isn’t entirely happy about it," 5 July 2019 The approved motion by Highland Mayor Pro Tem Larry McCallon, a Republican who chairs the committee, did not include the option of a phaseout and would be easier for refineries to meet. Tony Barboza,, "Air quality committee rejects ban on toxic acid used in South Bay refineries," 22 June 2019 The phaseout of four directors follows a settlement with the Securities and Exchange... Tim Higgins, WSJ, "Tesla to Cut Down on Board Members," 19 Apr. 2019

Recent Examples on the Web: Verb

The bill, which must be signed into law by California Gov. Gavin Newsom in order to take effect, would ban new contracts with private prison facilities in California starting next year, and would phase out their use entirely by 2028. Theo Wayt, NBC News, "California assembly votes to ban private, for-profit prisons," 13 Sep. 2019 Fast forward to 2012 and Thornton is opening up her first shop in Los Angeles, treating skin and slowly phasing out her makeup gigs. Shalwah Evans, Essence, "Lesley Thornton Is Putting Some Skin In The Game With Her Brand KLUR," 29 Aug. 2019 Reuters/Yilei Sun BYD, China’s largest electric car maker, has been under a lot of pressure in the last two years, with China’s auto market slowing and Beijing phasing out subsidies that supported the electric-vehicle market’s astronomical growth. Echo Huang, Quartz, "China’s electric-vehicle giant saw its profits jump 204% in a slowing car market," 21 Aug. 2019 In contrast, Warren’s plan caps student debt cancellation at $50,000 and gradually phases out the benefits for those earning between $100,000 and $250,000—thereby lessening the subsidy for upper-income college graduates. Walter Shapiro, The New Republic, "Arguing the World," 15 Aug. 2019 Armani is forecasting a return to growth next year, after regrouping its various sub-brands under three main lines—a process that will see mid-price department-store labels like Armani Jeans and Armani Collezioni phased out. Robert Williams, Fortune, "Giorgio Armani’s Restructuring his Fashion Empire," 26 July 2019 The ordinance, introduced by Councilwoman Kate Harrison, goes into effect Jan. 1, 2020, and phases out the use of natural gas by requiring all new single-family homes, town homes and small apartment buildings to have electric infrastructure. Sarah Ravani,, "Berkeley becomes first U.S. city to ban natural gas in new homes," 17 July 2019 Since his election in November, Newsom has been pressured by environmental advocates to ban new oil and gas drilling in California and completely phase out fossil fuel extraction in the state. Phil Willon,, "Gov. Gavin Newsom fires top official over fracking permits — but won’t ban the oil wells," 12 July 2019 The Soviet Union launched its own crewed military stations in the 1970s: Salyut 2, 3, and 5, but they were eventually phased out in favor of satellites. Andrew Liptak, The Verge, "The Department of Defense wants ideas for a tiny autonomous space station," 3 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phaseout.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of phaseout


1951, in the meaning defined above


1940, in the meaning defined at transitive sense

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Statistics for phaseout

Last Updated

26 Aug 2019

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Time Traveler for phaseout

The first known use of phaseout was in 1940

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English Language Learners Definition of phaseout

US : the act of stopping something gradually over a period of time in a planned series of steps or phases

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Rhyming Dictionary: Words that rhyme with phaseout

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