retrofit

verb

ret·​ro·​fit ˈre-trō-ˌfit How to pronounce retrofit (audio)
ˌre-trō-ˈfit
retrofitted or retrofit; retrofitting; retrofits

transitive verb

1
: to furnish (something, such as a computer, airplane, or building) with new or modified parts or equipment not available or considered necessary at the time of manufacture
2
: to install (new or modified parts or equipment) in something previously manufactured or constructed
3
: to adapt to a new purpose or need : modify
retrofit the story for a new audience
retrofit
ˈre-trō-ˌfit
noun

Did you know?

The concept of retrofitting became an urgent necessity during World War II, when weapons technology was advancing at an intense pace and planes and ships were becoming outdated even before their construction was complete, and the only solution was to retrofit the completed craft with the brand-new technology. Retrofitting was revived on a massive scale during the energy crisis of the 1970s, when new features were added to millions of old houses to make them more energy-efficient. Retrofitting is thus different from merely renovating, which may not involve any new technology at all.

Examples of retrofit in a Sentence

The factory has been retrofitted to meet the new safety regulations. We can retrofit your car with the new fuel system.
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.
In the last five years, SpaceX has launched hundreds of operational spy satellites and more recently several prototypes, which could be retrofitted to be used for the project, the sources said. Mike Stone and Marisa Taylor, USA Today, 18 Apr. 2025 Gamification can also be retrofitted to existing franchises, the TF1 unscripted exec adds. Stewart Clarke, Deadline, 8 Apr. 2025 Existing infrastructure can also be retrofitted to make the vulnerable buildings more resilient, particularly those that have already been damaged by earthquakes. Stephanie Yang, Los Angeles Times, 31 Mar. 2025 Even older structures can be retrofitted to include various forms of quake-resistant technology. Robin George Andrews, Scientific American, 28 Mar. 2025 See All Example Sentences for retrofit

Word History

First Known Use

1949, in the meaning defined at sense 1

Time Traveler
The first known use of retrofit was in 1949

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Cite this Entry

“Retrofit.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retrofit. Accessed 29 Apr. 2025.

Kids Definition

retrofit

verb
ret·​ro·​fit ˈre-trō-ˌfit How to pronounce retrofit (audio)
: to install (new or modified parts or equipment) in something previously manufactured or constructed

More from Merriam-Webster on retrofit

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