Fissioning is a term used to describe the process of splitting atoms. Synonyms for this term include atom splitting, nuclear fission, nuclear splitting, and atomic fragmentation. Fissioning is a common process used in nuclear power plants to generate electricity. It is caused by the bombardment of atomic nuclei by neutrons or other subatomic particles. Other synonyms for fissioning include radioactive decay, atomic disintegration, and nuclear breakdown. Fissioning is an essential process to the functioning of nuclear power plants, and its study has led to many groundbreaking discoveries in the field of nuclear science.