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wetting agent

noun, Chemistry
any admixture to a liquid for increasing its ability to penetrate, or spread over the surface of, a given material, especially cloth, paper, or leather.
1935-40 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for wetting-agent

wetting agent

(chem) any substance added to a liquid to lower its surface tension and thus increase its ability to spread across or penetrate into a solid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for wetting-agent

wetting agent

chemical substance that increases the spreading and penetrating properties of a liquid by lowering its surface tension-that is, the tendency of its molecules to adhere to each other. See detergent; surface-active agent

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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