Word Study
coolant
CIDE DICTIONARY
coolant, n.
a fluid (gas or liquid) used to cool a device by transferring heat away from one part to another. [WordNet 1.5]
OXFORD DICTIONARY
coolant, n.
1 a cooling agent, esp. fluid, to remove heat from an engine, nuclear reactor, etc.
2 a fluid used to lessen the friction of a cutting tool.
1 a cooling agent, esp. fluid, to remove heat from an engine, nuclear reactor, etc.
2 a fluid used to lessen the friction of a cutting tool.
Etymology
COOL + -ANT after lubricant
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