Permeability — definition (Water)

Water

The measure of the flow of water through soil. The ease (or measurable rate) with which gasses, liquids, or plant roots penetrate or pass through a layer of soil or porous media. The capacity or ability of a porous rock, sediment, or soil to allow the movement of water through its pores.

Bureau of Reclamation — Bureau of Reclamation Glossary

The ability of a material to transmit fluid through its pores when subjected to a difference in head.

NWS — Service Hydrologist Reference Manual Glossary of Hydrologic Terms retrieved 2014-06-01

Science› Energy› Renewable Energy

Solar Energy

The rate at which liquids pass through soil or other materials in a specified direction.

Office of Energy Efficiency and Renewable Energy (EERE) — Solar Energy Development PEIS Glossary retrieved 2014-06-15

Science

Weather

In hydrologic terms, the ability of a material to transmit fluid through its pores when subjected to a difference in head.

NOAA National Weather Service — National Weather Service Glossary

Technology

Defense

Having the ability to diffuse through or penetrate something.

DoD Missile Defense Agency — MDA Glossary