reformat

verb
re·​for·​mat | \ (ˌ)rē-ˈfȯr-ˌmat How to pronounce reformat (audio) \
reformatted; reformatting

Definition of reformat

transitive verb

: to format (something) again or in a different way … this will require you to reformat your drive, which will delete all of your files on your device …— Matthew Dunn … the text is tiny when fitting a full page on a phone's screen, though there's a button to temporarily reformat text for the smaller display.— Barbara Ortutay

First Known Use of reformat

1967, in the meaning defined above

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The first known use of reformat was in 1967

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