Last Updated：2025/11/20

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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.

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file extension

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Source Word

file extension

Noun

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.

Japanese Meaning

コンピュータのファイル名の末尾に付けられる短い文字列で、ファイルの内容の種類や、それを操作・開くために必要なソフトウェアを示す識別子

What is this buttons?

When saving the report, always double-check the file extension to make sure it will open with the right program.

Google Translation / DeepL Translation

レポートを保存する際は、正しいソフトで開けるようにファイルの拡張子を必ず確認してください。

Details

Sense（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.