[v. pur-kuh-leyt; n. pur-kuh-lit, -leyt]
verb (used with object), percolated, percolating.
to cause (a liquid) to pass through a porous body; filter.
(of a liquid) to filter through; permeate.
to brew (coffee) in a percolator.
verb (used without object), percolated, percolating.
to pass through a porous substance; filter; ooze; seep; trickle.
to become percolated: The coffee is starting to percolate.
to become active, lively, or spirited.
to show activity, movement, or life; grow or spread gradually; germinate: Interest in the idea has begun to percolate.
a percolated liquid.

1620–30; < Latin percōlātus, past participle of percōlāre to filter. See per-, colander, -ate1

percolable, adjective
percolative, adjective
unpercolated, adjective

The pronunciation of percolate as [pur-kyuh-leyt] with an intrusive y -glide, results from analogy with words like circulate and matriculate, where the unstressed vowel following the k -sound is symbolized by a u spelling, making the y -glide mandatory. In similar words where [k] is followed by some other vowel, the [y] represents a hypercorrection. The pronunciation of escalate as [es-kyuh-leyt] is another such example. See coupon, new. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To percolating
World English Dictionary
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
5.  a product of percolation
[C17: from Latin percolāre, from per + cōlāre to strain, from cōlum a strainer; see colander]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Medical Dictionary

percolate per·co·late (pûr'kə-lāt')
v. per·co·lat·ed, per·co·lat·ing, per·co·lates

  1. To cause a liquid to pass slowly through a porous substance or small holes; filter.

  2. To drain or seep through.

  3. To cause a solvent liquid to pass through a mixture, such as a powdered drug, so as to extract the soluble portion.

n. (-lĭt, -lāt')
A liquid that has been percolated.
per'co·la'tion n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Somehow, water must be percolating all the way from the surface of the ice down
  to its base.
There are other, less well-formed ideas percolating out there, too.
But a few different theories regarding coffee's healthful qualities are
Such a well depends on oil percolating through microscopic pores over long
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