[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 percolate
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
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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
The news of this progress will percolate into the department as a whole.
The challenge is to sustain and percolate the impetus.
In other words, read the book and let the advice percolate.
Now efforts to promote iced coffee consumption at home are beginning to
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