permeation; percolation; seepage
Technical term used in geology, civil engineering, and materials science for water passing through a porous medium.
This soil has high water permeability.
A cutoff wall was installed to prevent seepage through the dam.
permeable layer; pervious layer
permeability; water permeability
Compound of 透 (penetrate, permeate) and 水 (water). A straightforward technical coinage.