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An agent that produces cooling, especially a fluid that draws off heat by circulating through an engine or by bathing a mechanical part.
1. (Mechanical Engineering) a fluid used to cool a system or to transfer heat from one part of it to another
2. (Mechanical Engineering) a liquid, such as an emulsion of oil, water, and soft soap, used to lubricate and cool the workpiece and cutting tool during machining
1. a substance, as a liquid or gas, used to reduce the temperature of a system below a specified value.
2. a lubricant that dissipates the heat caused by friction.
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|Noun||1.||coolant - a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transferring heat away from one part to another; "he added more coolant to the car's radiator"; "the atomic reactor used a gas coolant"; "lathe operators use an emulsion of oil and water as a coolant for the cutting tool"|
agent - a substance that exerts some force or effect
fluid - a substance that is fluid at room temperature and pressure