percolation

[pur-kuh-ley-shuhn]
noun
1.
the act or state of percolating or of being percolated.
2.
Pharmacology. the extraction of the soluble principles of a crude drug by the passage of a suitable liquid through it.
3.
Geology. the slow movement of water through the pores in soil or permeable rock.

Origin:
1605–15; < Latin percōlātiōn- (stem of percōlātiō). See percolate, -ion

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
percolate
 
vb
1.  to cause (a liquid) to pass through a fine mesh, porous substance, etc, or (of a liquid) to pass through a fine mesh, porous substance, etc; trickle: rain percolated through the roof
2.  to permeate; penetrate gradually: water percolated the road
3.  informal (US) (intr) to become active or lively: she percolated with happiness
4.  to make (coffee) or (of coffee) to be made in a percolator
 
n
5.  a product of percolation
 
[C17: from Latin percolāre, from per + cōlāre to strain, from cōlum a strainer; see colander]
 
percolable
 
adj
 
perco'lation
 
n
 
'percolative
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

percolation
1613, from L. percolationem (nom. percolatio), noun of action from percolare "to strain through, filter," from per- "through" + colare "to strain," from colum "a strainer," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Nor does your supposedly scientific discussion go into the older methods such
  as boiling and percolation.
The engineer will evaluate the soils, perform a percolation test if necessary,
  and design the septic system.
Maintenance of the pond bottom to improve percolation will be done as needed
  following annual inspection.
The slowest percolation rate of the three trials is used for design.
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