chain reaction

noun

1
a
: a series of events so related to each other that each one initiates the next
b
: a number of events triggered by the same initial event
2
: a self-sustaining chemical or nuclear reaction yielding energy or products that cause further reactions of the same kind
chain-react intransitive verb

Examples of chain reaction in a Sentence

Increased oil prices could trigger a chain reaction in the economy.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Tariffs can have a chain reaction throughout the economy, Chris Swonger, president & CEO of the Distilled Spirits Council, told USA TODAY. Mike Snider, USA TODAY, 26 Nov. 2024 Constant stress and the continuous release of these hormones can set off chain reactions that cause weight gain.17 The body releases cortisol during stress, which further triggers the release of adrenaline and noradrenaline. Joy Emeh, Health, 21 Nov. 2024 In a chain reaction that began Sunday, a particularly intense coronal mass ejection (CME) has sent ions, which carry a charge, streaming toward Earth from the sun, on a collision course with our own magnetosphere. Theresa Braine, New York Daily News, 23 July 2024 That simple question set off a chain reaction that led to building Forbes.com as a separate, thriving digital entity. Dr. Diane Hamilton, Forbes, 20 Nov. 2024 See all Example Sentences for chain reaction 

Word History

First Known Use

1892, in the meaning defined at sense 1a

Time Traveler
The first known use of chain reaction was in 1892

Dictionary Entries Near chain reaction

Cite this Entry

“Chain reaction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chain%20reaction. Accessed 15 Dec. 2024.

Kids Definition

chain reaction

noun
1
: a series of events so related to each other that each one sets the next one going
2
: a chemical or nuclear reaction producing energy or products that cause further reactions of the same kind

Medical Definition

chain reaction

noun
: a self-sustaining chemical or nuclear reaction yielding energy or products that cause further reactions of the same kind

More from Merriam-Webster on chain reaction

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!