The term "atom-splitting" refers to the process of splitting atoms into smaller particles, commonly known as nuclear fission. There are several synonyms for this term, including atomic fission, nuclear splitting, and nucleus division. These terms are often used interchangeably to describe the same process that is vital in nuclear power generation and nuclear weapons. Other related terms include isotopic separation, radioactivity, and nuclear reaction. Despite their differences, all these terms are associated with the idea of breaking apart atoms and releasing energy. Understanding the terminology associated with atom-splitting is crucial in comprehending its significance in modern science and technology.