Definition of coolant
: a usually fluid cooling agent
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Recent Examples of coolant from the Web
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The result is a sub that's quieter than any other diesel, and even quieter than its nuclear cousins which require a constant churn of coolant that can give away their position.
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His car, which has a broken coolant system, took a few tries to start.
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Use air conditioning, because modern car coolant systems are actually more fuel-efficient than the drag created by driving with the windows open.
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Before hitting the road, do a vehicle check up. Test the battery, look for engine coolant leaks and check the tire condition, so as not to be one of the 340,000 motorists AAA expects to rescue at the roadside.
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Ammonia coolant is toxic, and Mission Control repeatedly warned the spacewalkers to be careful of any leaks.
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By 1967, the Army had abandoned the project, leaving behind hazardous wastes including sewage, radioactive coolant and carcinogenic industrial chemicals, as well as diesel fuel.
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The organisms had high levels of persistent organic pollutants, like PCBs and PBDE’s, chemicals used in industrial manufacturing as plasticizers, coolants and flame retardants.
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German luxury automaker Audi is recalling more than a million of its vehicles due to faulty electric coolant pumps, which have the potential to overheat and start a fire.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coolant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of coolant
COOLANT Defined for English Language Learners
Definition of coolant for English Language Learners
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: a liquid that is used to cool an engine or machine
Learn More about coolant
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Spanish Central: Translation of coolant Nglish: Translation of coolant for Spanish speakers Britannica English: Translation of coolant for Arabic speakers Britannica.com: Encyclopedia article about coolant
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