coolant

noun

cool·​ant ˈkü-lənt 

: a usually fluid cooling agent

Examples of coolant in a Sentence

Recent Examples on the Web

And to further lean into AI, management cited NVIDIA certification of its coolant distribution units with a pipeline above $1 billion. — Josh Brown,sean Russo, CNBC, 12 Oct. 2026

In direct liquid cooling, a specialized coolant is piped directly to components such as processors, whereas in immersion cooling, servers or other components are immersed in a nonconductive coolant. — Encyclopedia Britannica, 9 Oct. 2026

If mechanical parts fail or electricity cuts out, coolant circulation can quickly stop. — Aman Tripathi, Interesting Engineering, 9 Oct. 2026

Just as a car rarely requires additional coolant, closed-loop server cooling consumes no ongoing water. — Kevin Brown, Forbes.com, 24 Sep. 2026

Word History

Etymology

cool entry 2 + -ant entry 1

First Known Use

1915, in the meaning defined above

Rhymes for coolant

• puberulent
• pulverulent

Kids Definition

coolant

noun

cool·​ant ˈkü-lənt 

: a usually fluid cooling substance