Word.ws English Dictionary

file extensions

file extensions is the plural of file extension.

Meaning of file extension

Noun

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

Questions about file extensions

What is file extensions the plural of?
File extensions is the plural of file extension.

Words near file extensions in the dictionary

  1. file closers
  2. file descriptor
  3. file descriptors
  4. file down
  5. file extension
  6. file extensions
  7. file film
  8. file films
  9. file folder
  10. file folders
  11. file footage

Source and license

Adapted from Wiktionary: file extensions (page history and authors); file extension (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “file extensions.” Word.ws, https://word.ws/file_extensions. Based on Wiktionary, CC BY-SA 4.0.