Definition of "permeability" in English

noun

1. The property of being permeable.

2. The rate of flow of a fluid through a porous material.

3. (geology) A measure of the ability of a rock to transmit fluids (such as oil or water).

4. (physics) A quantitative measure of the degree of magnetization of a material in the presence of an applied magnetic field (measured in newtons per ampere squared in SI units).