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 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 The moves are leading some experts to step up estimates for the phaseout of coal power in the U.S. Katherine Blunt, WSJ, "Utilities Speed Up Closure of Coal-Fired Power Plants," 9 Jan. 2019 Tesla crossed the 200,000 milestone in July of 2018, triggering a similar phaseout that was complicated by the Model 3's production and delivery status. Eric Limer, Popular Mechanics, "The $7,500 Tax Credit for Buying an Electric Chevy Might Be Disappearing," 2 Jan. 2019 The Washington state Legislature last session passed and Gov. Jay Inslee has signed into law a phaseout of Atlantic salmon net-pen farming in Washington, with no new leases allowed after the current ones expire by 2025. Lynda V. Mapes, The Seattle Times, "Restocking Atlantic salmon pens blocked by court," 13 Apr. 2018 For band, a program that has wide participation in the district, the decision before the board is one of elimination or a phaseout, Schilling said. Pioneer Press,, "Tough choices: Norridge District 80 has decisions looming on band, kindergarten and sports programs," 22 Jan. 2018 There’s a relatively simple fix to this problem: The LIFT Act could give its $250 to $500 per month benefit to every household under the phaseout limit, without phasing in at all. Dylan Matthews, Vox, "Kamala Harris’s new basic income-style bill is so frustratingly close to being great," 19 Oct. 2018

Recent Examples on the Web: Verb

Or Not Your Father’s Root Beer, an unlikely sensation in 2015 that inspired knockoff brands from Anheuser-Busch (Best Damn Root Beer, which has been quietly phased out) and MillerCoors (Henry’s Hard Soda). Josh Noel,, "What’s the best hard seltzer? The worst? Is it a fad? We have answers.," 2 July 2019 Last June Dehesa authorized an A3 charter school called University Prep, even though the school’s petition did not name any curriculum and referenced outdated tests such as the ELPAC, an English learner test that the state phased out by 2016. Kristen Taketa, San Diego Union-Tribune, "Dehesa School District profited by cultivating charter schools," 23 June 2019 The company fought the Trans-Pacific Partnership trade agreement, which would have phased out tariffs on shoes coming from Vietnam. Katie Lobosco, CNN, "Why New Balance turned on Trump over China tariffs," 16 June 2019 That effectively makes Tlaib’s proposal a basic income, or at the very least a kind of negative income tax (a term used for variants of basic income that phase out with earnings, rather than remaining constant for everyone). Dylan Matthews, Vox, "Rashida Tlaib wants to give low-income adults $3,000 a year each, no questions asked," 12 June 2019 For the past five years the Campaign for Healthier Solutions—a coalition of organizations stretching from Texas to Maine—has called for dollar stores to phase out hazardous chemicals from their products. National Geographic, "Dollar stores moving to pull dangerous plastics from shelves," 24 May 2019 Speaking of which, that might be one main advantage for the Polestar 2 versus the Model 3—Tesla’s tax credits are phasing out, while Polestar’s full $7,500 credit will be in effect for years. Ezra Dyer, Popular Mechanics, "The Polestar 2 Is the First Car to Directly Challenge the Tesla Model 3," 27 Feb. 2019 The credit currently phases out after an automaker sells 200,000 such cars. Emily Stewart, Vox, "Trump says he’ll cut GM’s subsidies. He can’t do it without Congress.," 27 Nov. 2018 Large private food retailers like McDonald’s, Dunkin’ Donuts, Jamba Juice, and Chick-fil-A already have phased out polystyrene products or plan to phase them out or implement new recycling processes. Camille Harmer, Fortune, "How Banning Plastic Straws Could Make Pollution Even Worse," 12 July 2018

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

15 Jul 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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