• A suffix to the name of a computer file (e.g., .txt, .docx, .md). The extension indicates a characteristic of the file contents or its intended use. A file extension is typically delimited from the rest of the filename with a full stop (period), but in some systems it is separated with spaces. Other extension formats on early versions of Linux and some versions of IBM AIX include dashes or underscores. ← Wikipedia

1. More about this term (beta): Web search, articles and videos, books
2. Previous term: File
3. Next term: File locking
4. Random term: Service discovery