Flatpak
Proper Noun · Open Source
Definitions
A Linux application distribution and sandboxing system designed to make desktop apps easier to package and run across distributions. In desktop Linux culture, Flatpak is part of the ongoing effort to simplify software distribution and isolation.
In plain English: A Linux app packaging and sandboxing system.
Example: "They distributed the app as a Flatpak so users on different Linux distros would not need distro-specific packaging workarounds just to try it."