what do you mean by lubricant
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A lubricant is a substance that helps to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces.
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a substance (such as grease) capable of reducing friction, heat, and wear when introduced as a film between solid surfaces. 2 : something that lessens or prevents friction or difficulty a social lubricant.
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