nuclear reaction

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nuclear reaction

n.
A reaction, as in fission, fusion, or radioactive decay, that alters the energy, composition, or structure of an atomic nucleus.

nuclear reaction

n
(General Physics) a process in which the structure and energy content of an atomic nucleus are changed by interaction with another nucleus or particle

re•ac•tion

(riˈæk ʃən)

n.
1. action in response to some influence, event, etc.: the nation's reaction to the president's speech.
2.
a. a physiological response to an action or condition.
b. a physiological change indicating sensitivity to foreign matter: an allergic reaction.
3. an action in a reverse direction or manner.
4. a movement toward extreme political conservatism; a desire to return to an earlier system or order.
5.
a. the reciprocal action of chemical agents upon each other; chemical change.
b. a process that, unlike a chemical reaction, has the power to change the nucleus of an atom, as radioactive decay, fission, or the like.
6. Mech. the instantaneous response of a system to an applied force, manifested as the exertion of a force equal in magnitude, but opposite in direction, to the applied force.
[1635–45; on the model of react]
re•ac′tion•al, adj.

nuclear reaction

A reaction, as in fission, fusion, or radioactive decay, that changes the energy or structure of an atomic nucleus. See more at fission, fusion.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nuclear reaction - (physics) a process that alters the energy or structure or composition of atomic nuclei
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
chain reaction - a self-sustaining nuclear reaction; a series of nuclear fissions in which neutrons released by splitting one atom leads to the splitting of others
radioactive decay, disintegration, decay - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
endoergic reaction - a nuclear reaction occurring with absorption of energy
exoergic reaction - a nuclear reaction accompanied by the evolution of energy
nuclear fission, fission - a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
nuclear fusion, nuclear fusion reaction, fusion - a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
spallation - (physics) a nuclear reaction in which a bombarded nucleus breaks up into many particles; "some astronomers believe that the solar system was formed by spallation when the sun was a very young star"
References in periodicals archive ?
22]Ne ratios reflecting variable impact of nucleogenic [sup.