What Does Hidden File Mean?

A hidden file is a file which has the hidden attribute turned on so that it is not visible to users when exploring or listing files. Hidden files are used for storage of user preferences or for preservation of the state of utilities. They are created frequently by various system or application utilities. Hidden files are helpful in preventing accidental deletion of important data.

Techopedia Explains Hidden File

Most operating systems provide ways to hide files and file directories. However, in most operating systems, file management utilities allow users to explore hidden files. Software applications are also available for hiding and unhiding files and file directories.