"Default applications" refers to the software programs or apps that are automatically chosen or set as the primary options for certain tasks or file types on your computer or device. Full definition
Now, there's a simple way to manage default applications for the most - used apps all in one place. (howtogeek.com)
If you're having a hard time finding this setting, here's a more detailed explanation of setting default applications. (howtogeek.com)
Modern browsers allow web apps to have their own place on your taskbar, function as default applications, and even run offline and in the background. (howtogeek.com)