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The Collaborative International Dictionary
Percolation

Percolation \Per`co*la"tion\, n. [L. percolatio.] The act or process of percolating, or filtering; filtration; straining. Specifically (Pharm.), the process of exhausting the virtues of a powdered drug by letting a liquid filter slowly through it.

Douglas Harper's Etymology Dictionary
percolation

1610s, from Latin percolationem (nominative percolatio), noun of action from past participle stem of percolare "to strain through, filter," from per- "through" (see per) + colare "to strain," from colum "a strainer" (see colander).

Wiktionary
percolation

n. the seepage or filtration of a liquid through a porous substance

WordNet
percolation
  1. n. the slow passage of a liquid through a filtering medium; "the percolation of rainwater through the soil"; "the infiltration of seawater through the lava" [syn: infiltration]

  2. the act of making coffee in a percolator

  3. the filtration of a liquid for extraction or purification

Wikipedia
Percolation

In physics, chemistry and materials science, percolation (from Latin percōlāre, "to filter" or "trickle through") refers to the movement and filtering of fluids through porous materials.

Percolation (cognitive psychology)

Percolation (from the Latin word percolatio, meaning filtration) is a theoretical model used to understand the way activation and diffusion of neural activity occur within neural networks. Percolation is a model used to explain how neural activity is transmitted across the various connections within the brain. Often it is easiest to understand percolation theory by explaining its use in epidemiology. Individuals that are infected with a disease can spread the disease through contact with others in their social network. Those who are more social and come into contact with more people will help to propagate the disease quicker than those who are less social. Therefore factors such as occupation and sociability influence the rate of infection. Now, if one were to think of neurons as the individuals and synaptic connections as the social bonds between people, then one can determine how easily messages between neurons will spread. When a neuron fires, the message is transmitted along all synaptic connections to other neurons until it can no longer continue. Synaptic connections are considered either open or closed (like a social or unsocial person) and messages will flow along any and all open connections until they can go no further. Just like occupation and sociability play a key role in the spread of disease, so too do the number of neurons, synaptic plasticity and long-term potentiation when talking about neural percolation.

Usage examples of "percolation".

Then later Paul Bunyan, the distant descendant of these panspermic Archaea, came back to Mars to find it cold and ostensibly empty, though some of the old ones still persisted, golluming around in various submartian volcanic percolations.

The custard apples, check dams, contour bunds, and percolation tanks are all elements in reversing that process.

Naidu explained how he had supervised the construction of contour bunds and check dams, which channeled water from the seasonal monsoon rains into a football-field-sized percolation tank: a ditchlike building foundation that took a year to fill up.

The lander had drilled down and secured a soil sample from under the sands at the mouth of Shalbatana Vallis, where thermal sensors had detected heat from a volcanic vent, which meant the permafrost ice in that region had liquid percolations in it.

It couldn’t be clearer that Eleanor wasn’t at all pleased with the percolations of the director’s genius.

They had been going over the energy readouts and mysterious percolations of the engines for nearly half an hour, and Soleta had agreed to give the matter a good deal more study, particularly searching for potential analogs to other such occurrences in assorted vessels.

The King's malicious mind may have started to percolate, and the results of such percolations were inevitably foul.