The phrase "single cartridge" means having only one container or package that holds something, like a product, instead of multiple separate ones. Full definition
Putting the GBA's single cartridge multiplayer abilities to good use, you could ruin friendships faster than a round of monopoly using the Game Link Cable. (gameaddik.com)
This mode even has single cartridge wireless multiplayer, a welcome addition that only heightens the fun. (nintendowire.com)
As they now report in Applied Physics Letters, from AIP Publishing, by using a single cartridge it's possible to print a metamaterial which expands in size under hydrostatic pressure, even though it's made up of material which normally shrinks under hydrostatic pressure. (sciencedaily.com)