Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Nuclear fusion is a process in which two or more atomic nuclei come together to form a heavier nucleus, releasing a large amount of energy in the process.
Related terms
Plasma: A state of matter consisting of charged particles that occurs during nuclear fusion.
Thermonuclear Reaction: A type of nuclear reaction that involves high temperatures and pressures, like those found in stars.
Sun: The ultimate example of nuclear fusion, where hydrogen atoms combine to form helium and release massive amounts of energy.