phaseout

1 of 2

noun

phase·​out ˈfāz-ˌau̇t How to pronounce phaseout (audio)
Synonyms of phaseoutnext
: 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
Meaning, as of now, there are no statewide regulations in place to prevent large-scale dumping of plastic bags already in storage once the phaseout begins. Chaewon Chung, Sacbee.com, 23 Dec. 2025 For married couples filing jointly, the phaseout begins at $170,000. Annie Nova, CNBC, 29 Nov. 2025
Verb
In his seven years in the Assembly, Gabriel has had several high-profile bills signed into law, including a hike on gun and ammo taxes to fund gun violence prevention and multiple bills to phase out synthetic dyes and other additives in food starting in 2027. Nicole Nixon, Sacbee.com, 31 Dec. 2025 Separately, a 2024 law signed by Newsom had already set plastic grocery bags on a path to being phased out statewide by 2026. Grant Stringer, Mercury News, 29 Dec. 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

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Cite this Entry

“Phaseout.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phaseout. Accessed 1 Jan. 2026.

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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