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单词 percolation
释义 per·co·la·tion
\ˌ ̷ ̷ ̷ ̷ˈlāshən\ noun
(-s)
Etymology: Latin percolation-, percolatio, from percolatus + -ion-, -io -ion
1.
 a. : the slow passage of a liquid through a filtering medium : leaching, seepage
  < percolation of water downward through the soil — Russell Lord >
 b. : a method of extraction or purification by means of filtration
  < decolorization of lubricating oils by percolation >
 c. : the process of brewing coffee by causing hot water to pass through it in a percolator
 d. : the process of extracting the soluble constituents of a powdered drug by passage of a liquid through it
2. : diffusion by gradual spreading or penetration
 < a gradual percolation of Scandinavian motives into sculpture — O. Elfrida Saunders >
 < the percolation downward through the whole middle class of the sense of freedom — Roy Lewis & Angus Maude >
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更新时间:2025/1/11 7:26:10