Permeability (earth Sciences)
Permeability in fluid mechanics and the earth sciences (commonly symbolized as κ, or k) is a measure of the ability of a porous material (often, a rock or unconsolidated material) to allow fluids to pass through it.
Read more about Permeability (earth Sciences): Units, Applications, Description, Determination, Intrinsic and Absolute Permeability, Permeability To Gases, Tensor Permeability, Ranges of Common Intrinsic Permeabilities