What does percolate mean?
Percolate means to pass through pores or gradually spread through a system. Literally, a liquid percolates through soil, rock, coffee grounds, or another porous material. Figuratively, an idea, rumour, influence, or piece of information percolates when it spreads slowly and indirectly through a community or organization. The word often carries a sense of quiet, continuous movement: there is no dramatic breakthrough, only a steady accumulation and distribution. It is especially useful in writing about water, geology, filtration, social movements, institutional culture, and the way information travels. In British and American English, both the literal and figurative meanings are established, although the figurative use is more common in formal contexts than in casual speech.
To pass through a porous material or permeable substance, especially as a liquid.
"Clean water slowly percolated through the gravel bed."
Common in technical and environmental contexts; often describes water, gases, or other fluids moving through soil or porous material.
To spread gradually through a group, system, or body of information.
"The new policy percolated through the organization over several months."
Figurative and generally formal; it suggests gradual, indirect spread rather than a sudden event.
To make coffee by passing hot water through ground coffee, or to be made in this way.
"He percolated a pot of coffee while reading the newspaper."
This use is established but less common in modern English than the literal and figurative senses.
A beverage, especially coffee, prepared by passing hot water through ground coffee.
"She poured herself a cup of strong percolate."
Noun use is uncommon and is mainly associated with coffee.
The plural is rarely needed because the noun sense is uncommon and usually refers to a single serving or brew.
"The café offered several different percolates."
To say that an idea has “percolated” is to picture it moving slowly through pores, soaking into a community one small connection at a time.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does percolate come from?
The verb comes from Latin percolare, meaning “to let through” or “filter through,” from per- “through” and colare “to strain.” It entered English in the early 17th century in the sense of filtering a liquid and later developed the figurative meaning of spreading gradually. The same Latin root is reflected in related forms such as percolator and percolation, while porosity belongs to a related but distinct family of Latin-derived words.
Related word forms
How percolate is actually used
In its literal sense, percolate is formal and technical, especially in discussions of water, soil, or porous materials. The figurative sense is common in formal and journalistic writing and suggests gradual, indirect spread.
Easily confused with percolate
Percolate usually suggests movement through pores or gradual diffusion, whereas permeate can mean to spread throughout something more directly or comprehensively.