derate

verb

de·​rate (ˌ)dē-ˈrāt How to pronounce derate (audio)
derated; derating; derates

transitive verb

: to lower the rated capability of (something, such as an electrical or mechanical apparatus) because of deterioration or inadequacy

Examples of derate 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.
The analyst said that past concerns about the company’s drift in strategy as well as a guidance shortfall earlier in the year helped derate the stock. Darla Mercado, Cfp®, CNBC, 31 Dec. 2025 In 2014, Jalopnik's Rob Holland tried taking a Model S around the track, only for the battery to derate about three minutes in. Jonathan M. Gitlin, Ars Technica, 6 Sep. 2019 The wheels are then derated to – that is, run at – 50 percent of maximum speed. Charles Platt, WIRED, 1 May 2000

Word History

First Known Use

1947, in the meaning defined above

Time Traveler
The first known use of derate was in 1947

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Cite this Entry

“Derate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/derate. Accessed 9 Jan. 2026.

Last Updated: - Updated example sentences
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