chain reaction
C1Formal, Academic, Technical, Journalistic
Definition
Meaning
A sequence of events where each event is triggered by the previous one, often producing cumulative and accelerating effects.
Any process in which an initial change, event, or action causes a series of similar events, each producing the next, often leading to a significant final outcome. Commonly used in physics, chemistry, social dynamics, and business.
Linguistics
Semantic Notes
The term inherently implies causality, progression, and amplification. While neutral in technical contexts, in social/political contexts it often carries a connotation of uncontrolled, escalating events, sometimes negative.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling differences follow standard conventions (e.g., 'catalyse' vs. 'catalyze' in related contexts).
Connotations
Identical.
Frequency
Slightly higher frequency in American media and academic writing, but the difference is marginal.
Vocabulary
Collocations
Grammar
Valency Patterns
[Verb] a chain reaction (trigger/cause/start)A chain reaction [verb] (ensues/follows/occurs)lead to a chain reaction of [noun]a chain reaction that [clause]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “It set off a chain reaction.”
- “One thing led to another (informal equivalent).”
Usage
Context Usage
Business
A small error in the supply chain software triggered a chain reaction of delays across three continents.
Academic
The researchers studied the polymerase chain reaction, a technique for amplifying DNA.
Everyday
One negative comment online can start a chain reaction of criticism.
Technical
The nuclear fission chain reaction must be carefully controlled within the reactor core.
Examples
By Part of Speech
verb
British English
- The policy decision could chain-react through the entire economy.
- Events began to chain-react with alarming speed.
American English
- The scandal is likely to chain-react through the entire industry.
- Failures in one sector began to chain-react into others.
adverb
British English
- The system failed chain-reactively, with each fault causing the next.
- (Extremely rare; 'in a chain reaction' is preferred.)
American English
- The closures happened chain-reactively, one after the other.
- (Extremely rare; 'in a chain reaction' is preferred.)
adjective
British English
- They feared a chain-reaction collapse of several banks.
- The report warned of chain-reaction effects in the housing market.
American English
- The investigation uncovered a chain-reaction failure in the safety systems.
- We are seeing chain-reaction layoffs across the tech sector.
Examples
By CEFR Level
- The boy pushed one book, and it started a chain reaction. All the books fell down.
- The factory closure caused a chain reaction. Many local shops also had to close.
Learning
Memory Aids
Mnemonic
Imagine a row of dominoes falling: the first domino (cause) knocks over the second, which knocks over the third, and so on (reaction). This visual is a perfect 'chain reaction'.
Conceptual Metaphor
EVENTS ARE PHYSICAL FORCES CAUSING A SERIES OF COLLISIONS.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'цепная реакция' for non-physical processes where it might sound unnatural; 'цепочка событий' or 'эффект домино' might be better. The Russian term is a direct borrowing, but its usage spectrum is slightly narrower.
Common Mistakes
- Using 'chain reaction' for a single cause with multiple simultaneous effects (e.g., 'The storm caused a chain reaction of problems' is okay if the problems caused each other sequentially). Confusing it with 'ripple effect', which implies spreading outward from a centre, not necessarily a strict linear sequence.
Practice
Quiz
In which context is the term 'chain reaction' used most precisely?
FAQ
Frequently Asked Questions
They are often used interchangeably. 'Domino effect' is more visual and informal, emphasising the sequential collapse of similar items. 'Chain reaction' is more technical and can involve amplification or change in the nature of the events (e.g., in chemistry).
Yes, though less common. For example: 'Her small act of kindness started a chain reaction of goodwill throughout the community.'
It is standardly written as two words ('chain reaction'). The hyphenated form 'chain-reaction' is used only when it functions as a compound modifier before a noun (e.g., 'a chain-reaction accident').
In nuclear physics, referring to a self-sustaining series of nuclear fissions, crucial for both nuclear power generation and nuclear weapons.
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