phaseout

1 of 2

noun

phase·​out ˈfāz-ˌau̇t How to pronounce phaseout (audio)
: a gradual stopping (as in operations or production) : a closing down by phases

phase out

2 of 2

verb

phased out; phasing out; phases out

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Reactors on their way OUT: Japan: The latest phaseout news came from Japan, the epicenter of nuclear distrust since the earthquake and subsequent meltdowns in 2011. IEEE Spectrum, 19 Sep. 2012 The United Nations itself now calls for the phaseout of coal, oil, and methane gas. Genevieve Guenther, WIRED, 26 Nov. 2024
Verb
According to an internal memo, USAID staff were notified that all roles not mandated by law will be phased out in July and September. Hannah Parry, MSNBC Newsweek, 28 Mar. 2025 That effect will mostly phase out after this season, but it’s had a huge impact on roster age. Lev Akabas, Sportico.com, 27 Mar. 2025 See All Example Sentences for phaseout

Word History

First Known Use

Noun

1951, in the meaning defined above

Verb

1940, in the meaning defined at transitive sense

Time Traveler
The first known use of phaseout was in 1940

Browse Nearby Words

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Cite this Entry

“Phaseout.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phaseout. Accessed 13 Apr. 2025.

Kids Definition

phase out

verb
: to discontinue doing, producing, or using
phasing out old machinery

More from Merriam-Webster on phaseout

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