file extension

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English

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Noun

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file extension (plural file extensions)

  1. A short series of text characters at the end of a computer filename, used to indicate the type of contents and the software that will be required to operate or open it.
    Synonyms: filename extension; extension (ellipsis)
    Hypernym: extension
    A text file may have a file extension of .txt.
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Translations

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See also

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