permeability

(pûr'mē-ə-bĭl'ĭ-tē)
n., pl., -ties.

1. The property or condition of being permeable.
2. The rate of flow of a liquid or gas through a porous material.

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Ability of soil to absorb or drain away liquid.


Example: In order to install a septic tank at the house, it was necessary to do a percolation test to see if the soil had sufficient permeability to serve as a waste drainage field.

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1. The property of a porous material which permits the passage of water vapor through it. Also See permeance.
2. The property of soil, rock, or mantle which permits water to flow through it.

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Measure of how much better a material is as a path for magnetic lines of force with respect to air which has a permeability of one. Symbolized by the Greek lower case letter mu (m).

The ability for a fluid (liquid or gas) to pass through a solid. Semipermeable membranes are used for membrane filtration. Oxygen permeability is measured in packaging to avoid product oxidation and potential spoilage.

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1. the quality or degree of being permeable or porous.
2. or magnetic permeability (of a substance) symbol: μ; the ratio of the magnetic induction, B, to the magnetic field strength, H, at any point within the substance, i.e. μ = B/H. The SI unit is the henry per metre or newton per square metre.

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The level or degree of the state of being permeable.

n

The degree to which one substance allows another substance to pass through it.

For a list of words related to permeability, see:

• Processes, Phenomena, Events, and Techniques - permeability: measure of the ease with which fluid can be passed through pore space of rock

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