What does permeate mean?
To permeate means to pass through, spread within, or become thoroughly established throughout something. The word can describe water moving through soil, a scent filling a room, an idea influencing a community, or regulations affecting every part of an organization. Because “permeate” often carries the sense of gradual and far-reaching diffusion, it conveys more than a single localized action. A smell permeates a building, enthusiasm permeates a crowd, and optimism permeates a team. The term is used in both British and American English and appears in formal, literary, journalistic, and academic contexts as well as ordinary descriptions. It is particularly effective when the subject is an influence, quality, substance, or condition that reaches throughout a larger space or group.
verbTo pass through or spread throughout a material, substance, group, or area. It can describe physical penetration as well as the gradual influence of an idea, feeling, or condition.
- To pass through a substance or material, especially by gradual diffusion.
- To spread throughout a place, group, or system.
- To permeate something with a quality, idea, or influence.
- To become widespread or deeply established.
"The smell of coffee permeated the entire office."
"Rainwater permeated the soil and reached the roots of the plants."
"Her optimism permeated the entire team."
"The new regulations permeate every level of the organization."
A single sound can permeate a room long after its source has disappeared.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of permeate
The word comes from Latin permeare, meaning “to pass through” or “penetrate,” formed from the prefix per- and meare, “to go.” English borrowed it in the early 17th century in the sense of passing through or penetrating a substance. Its later figurative use developed naturally from the idea of a substance or influence spreading throughout a place or group.
Related word forms
How permeate is actually used
The word is formal to neutral in tone. It is especially common in journalism, academic writing, and descriptions of atmospheres, ideas, emotions, influences, and commercial trends. In physical contexts, it often suggests slow or pervasive passage rather than a sudden puncture.
Easily confused with permeate
“Permeate” often suggests spreading through a substance or area, while “penetrate” more strongly emphasizes entering, piercing, or working through an obstacle.