Translation guide
The process of splitting an atomic nucleus into smaller parts, releasing energy. In Japanese, this is a technical term with a standard translation, but context determines whether the scientific term or a more descriptive phrase is used.
The standard term for nuclear fission in physics and engineering contexts.
The standard technical term for nuclear fission. Used in scientific, academic, and formal contexts.
核分裂反応は大量のエネルギーを放出する。
Nuclear fission reactions release a large amount of energy.
ウラン235の核分裂を利用して発電する。
Electricity is generated using the nuclear fission of uranium-235.
A more explicit term meaning 'atomic nucleus fission'. Sometimes used for clarity, but 核分裂 is more common.
原子核分裂の研究は20世紀に大きく進展した。
Research on atomic nucleus fission advanced greatly in the 20th century.
When explaining the concept to a non-specialist audience, a more descriptive phrase may be used.
A plain explanatory phrase meaning 'the splitting of an atomic nucleus'. Suitable for educational or conversational contexts.
原子力発電は、原子核が分裂するときに発生する熱を利用しています。
Nuclear power generation uses the heat produced when atomic nuclei split.
In everyday conversation, Japanese speakers may not use the technical term 核分裂 unless the topic is specifically about nuclear physics or energy. Instead, they might describe the process in simpler terms.