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Noun, Suru verb
1. adsorptionChemistry, Antonym: 脱着 だっちゃく
Noun, Suru verb
2. adhesion (by suction); attachment; sticking to
Wikipedia definition
3. AdsorptionAdsorption is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. This process differs from absorption, in which a fluid (the absorbate) permeates or is dissolved by a liquid or solid (the absorbent). Note that adsorption is a surface-based process while absorption involves the whole volume of the material.
Read “Adsorption” on English Wikipedia
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Read “Adsorption” on DBpedia

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