Breeder Reactor
Imagine trying to manage a budget where your savings account grows faster than you spend money from your checking account. A breeder reactor works in a similar way by generating more nuclear fuel than it consumes during its operation. Just as a savvy budget allows you to save more even as you spend, a breeder reactor cleverly converts non-fissile materials into usable fuel, effectively increasing its fuel reserves as it operates, ensuring a net gain in resources.
Practice Version
Breeder Reactor: A nuclear reactor that produces more fuel than it uses breeder reactor. A breeder reactor generates more fissile material than it consumes, making it a sustainable energy source.