What does "file extension" mean?

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.

What is a synonym for "file extension"?

Common synonyms include: suffixes.

File extension

noun

noun ·Rare ·Advanced level

Definitions

Noun

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.
"A text file may have a file extension of .txt."

Synonyms

All synonyms

suffixes

Example

More examples

"A text file may have a file extension of .txt."

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