Chain-reaction meaning

A series of events in which each induces or influences the next.
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(physics) A multistage nuclear reaction, especially a self-sustaining series of fissions in which the release of neutrons from the splitting of one atom leads to the splitting of others.
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(chemistry) A series of reactions in which one product of a reacting set is a reactant in the following set.
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A self-sustaining series of chemical or nuclear reactions in which the products of the reaction contribute directly to the process: it can be started by light, an electric spark, bombardment with neutrons, etc.
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Any sequence of events, each of which results in, or has an effect on, the following.
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A process in which the result of one event triggers another event, usually of the same kind, which in turn triggers yet another event, so that the overall reaction tends to be self-sustaining. Nuclear fission reactions are chain reactions, in which the splitting of an atomic nucleus releases neutrons that penetrate other nuclei, causing them to split. The spread of heat through a substance is also a chain reaction, as fast-moving molecules in a hot part of the substance collide with neighboring molecules, passing on their kinetic energy to them, thereby making more of the substance warmer.
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(physics) A nuclear reaction in which particles produced by the fission of one atom trigger fissions of other atoms.

The Manhattan Project produced the first recorded controlled chain reaction.

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(idiomatic) A series of events, each one causing the next.

The bombs all exploded in a chain reaction.

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