Fission reactions are a type of nuclear reaction. This reaction occurs when the nucleus of an atom splits into two or more smaller nuclei. Synonyms for fission reactions may include nuclear fission, atomic splitting, or nuclear division. The splitting of the atomic nucleus releases a significant amount of energy and is often used in nuclear power plants as a source of energy. The process can also occur naturally, as in the case of radioactive materials. Fission reactions are essential to our understanding of atomic particles and the science behind nuclear energy. It is important to use these synonyms in scientific discussions to fully convey meaning and understanding of this topic.