Fission of uranium and plutonium is mainly used to produce electricity, but also smaller reactors are used to produce radioisotopes for medical and industrial use
That's really two questions, "What are the uses of Nuclear fission reaction?" and "What are potential uses of nuclear fission?". See the "Related questions" below for answers to each question.
Nuclear weapons
When some bacteria reproduces, it uses binary fission.
Nuclear bombs
Fission
The fission of U-235 and Pu-239
nuclear fission
Smelling the steaks on the barbecue really whet my appetite!I bought a new stone to whet the blade of my dager.
Just let me whet my knife, and I 'll get started.
You whet an appetite by smelling or tasting something that you really like.
There are two primary design styles of fission reactors to produce electricity. Pressurized, and Boiling water reactors.
All the operating reactors use fission, practically all with U-235, a few with Pu-239, and sometimes with a mixed fuel (MOX)