Definition of nuclear reaction in English English dictionary
a process such as the fission of an atomic nucleus, or the fusion of one or more atomic nuclei and / or subatomic particles in which the number of protons and / or neutrons in a nucleus changes; the reaction products may contain a different element or a different isotope of the same element
A reaction, as in fission, fusion, or radioactive decay, that alters the energy, composition, or structure of an atomic nucleus
(physics) a process that alters the energy or structure or composition of atomic nuclei