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Definitions

chemical reaction

[kem-i-kuhl ree-ak-shuhn] / ˈkɛm ɪ kəl riˈæk ʃən /
NOUN
chain reaction
Synonyms
STRONGEST
vicious circle
WEAK
causal nexus cause and effect chain of circumstances concatenation of events domino effect powder train ripples in a pond

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Form’s iron-air batteries generate electricity through a chemical reaction involving oxygen, water and iron powder that mimics how old pieces of metal gather rust.

From Barron's • Feb. 24, 2026

More abundant metals tend to break down quickly, which reduces their ability to drive the chemical reaction.

From Science Daily • Feb. 3, 2026

Industrial catalysts -- substances that reduce the amount of energy required for a given chemical reaction -- help manufacturers boost reaction speed, yield or efficiency when producing key materials.

From Science Daily • Nov. 21, 2025

Scunthorpe's furnaces produce molten iron by splitting rocks containing iron ore in a chemical reaction that requires intense heat.

From BBC • Apr. 14, 2025

“It’s all household stuff. Baking soda. Stuff like that. My cousin told me how. It’s a chemical reaction, but it’s harmless stuff.”

From "Popcorn" by Rob Harrell

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.