Percolation

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percolation

[pər·kə′lā·shən]
(computer science)
The transfer of needed data back from secondary storage devices to main storage.
(hydrology)
Gravity flow of groundwater through the pore spaces in rock or soil.
(mining engineering)
Gentle movement of a solvent through an ore bed in order to extract a mineral.
(science and technology)
Slow movement of a liquid through a porous material.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Percolation

 

a method used to leach ores in a fixed bed, mainly, copper oxides and gold ores; leaching by this method is called percolation leaching. The process is carried out in a percolator tank. The pulverized ore is uniformly loaded onto the tank’s false bottom, which is a filtering device. The leaching solution is introduced either from beneath the false bottom, a process called upward leaching, or onto the surface of the load, a process called downward leaching; accordingly, the solution is collected either above or below the false bottom.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

percolation

The downward movement of water into soil.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
For instance, it has been reported that the cohesion between percolating individualized whiskers is stronger than the cohesion between aggregates (11).
The compositions are packed with percolating fluids, tubes and pipes, beakers and jars, insects and other nature specimens, and the faces of youngish men, seemingly borrowed from slightly outdated clip art.
The bacteria might break down minerals and plant remains originally buried beneath the glacier or subsequently washed in by water percolating through the ice, says Sharp.
The ramp's slope is adjusted to produce a discernible steepness towards the top, towards the percolating light.
He kicks off the recording with the percolating "Rain Your Love Down" and "Edge of Eternity," both of which project Wonder's classic style and lyrics.
There's a lot of early-twentieth-century culture percolating through Dzama's fertile imagination: comic books, serial Westerns, Surrealism, psychoanalysis.
"It seemed too much like playing with dolls," he confesses, acknowledging a discomfort with a "percolating gay thing" as a factor in giving it up.
This suggests that the amino acids were inserted into the meteorite by Antarctic meltwater percolating through the rock.
Luther Vandross joins Aretha for the percolating duet, "Doctor's Orders," which he also produced.
You hear that noise on the sound track--the percolating buzz of a crowd, with drinks flowing, talk popping, and dance music jerking you around, all bass and beat.
Percolating up from Earth's interior, hot, sulfurous water spews forth from seafloor cracks, providing a rich environment for these organisms.