How do you use the word "retrofit" in a sentence?

Here are real-life examples of using "retrofit": Tom refused to allow the robot to return a change in the retrofit frame.

Retrofit Meaning

/ˌɹɛtɹəʊˈfɪt/

Definition, CEFR level C1, pronunciation, examples, and quiz.

Definition

verbTo supply (a device, structure, etc.) with new components or parts that were not previously available or installed; to modernize.

verbTo add or substitute (new components or parts) that were not previously available for or installed in a device, structure, etc.

Sentence Examples

Tom refused to allow the robot to return a change in the retrofit frame.

CEFR Practice Quiz

The factory will ____ the old machines with new safety features next month.

CEFR Practice Quiz (Alternate)

The council decided to ____ the old streetlights with energy-efficient LED bulbs to reduce costs.

Word Origin & History

The verb is derived from retro- (prefix meaning ‘back; backward’) + fit (“to equip, supply”). The noun, which is first attested later than the verb, is either derived: * from the verb (see above); or * from retro- + fit (“act of fitting; conformity of elements one to another”).

Literary Quotations & Historical Citations

"Trams dating from 2012 have been retro-fitted with lithium batteries, with the conversions starting in 2018." — 2020 January 2, Richard Clinnick, “Midlands Metro Welcomes New Catenary-free Trams”, in Rail, Peterborough, Cambridgeshire: Bauer Media, →ISSN, →OCLC, page 16:

"The project involves retrofitting Google’s Pixel smartphones to certain subway cars to collect sounds and other data and feed it into Google’s Cloud. […] When asked why the devices were retrofitted on older models instead of newer ones, Sarno said the MTA typically uses older car models when making modifications in case there are any unwanted effects." — 2025 March 9, Nic F. Anderson, “Tired of subway delays? The MTA wants to fix that by strapping Google smartphones to New York trains”, in CNN:

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