| verb | spread or diffuse through “An atmosphere of distrust has permeated this administration” |
| verb | pass through “Water permeates sand easily” |
| verb | penetrate mutually or be interlocked “The territories of two married people interpenetrate a lot” |
| permeative | adjective | spreading or spread throughout |
| permeant | adjective | spreading or spread throughout |
| permeation | noun | the process of permeating or infusing something with a substance |
| pervasive | adjective | spreading or spread throughout |
| pervasion | noun | the process of permeating or infusing something with a substance |
| penetrative | adjective | tending to penetrate; having the power of entering or piercing |
| interpenetration | noun | mutual penetration; diffusion of each through the other |
| diffusive | adjective | spreading by diffusion |
| diffusion | noun | the act of dispersing or diffusing something |
| diffusor | noun | baffle that distributes sound waves evenly |
| percolation | noun | the slow passage of a liquid through a filtering medium |
| filtration | noun | the process whereby fluids pass through a filter or a filtering medium |