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
The authors recommend a global cap on plastic production, as well as phaseouts of toxic chemical additives. Joseph Winters, Wired News, 16 Aug. 2025 Ultimately, the phaseout could end up helping the same Chinese manufacturers the White House wants to combat. Tim McDonnell, semafor.com, 5 Aug. 2025
Verb
Single and Head of Households filers are phased out by $50 for each $1,000 that a taxpayer’s MAGI is over $200,000. Heather L. Locus, Forbes.com, 13 Aug. 2025 The Navy is in the midst of phasing out its last nine cruisers, which are near the end of their useful service life. Gary Robbins, San Diego Union-Tribune, 13 Aug. 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 29 Aug. 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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