A measure of the ability of soil, sediments, and rock to transport water horizontally and vertically. Permeability is dependent on the porosity of the medium the water is flowing through. Some rocks l [..]

Ability or power to enter or pass through a cell membrane.

The ability, or measurement of a rock's ability, to transmit fluids, typically measured in darcies or millidarcies. The term was basically defined by Henry Darcy, who showed that the common mathe [..]

  The ease with which fluid flows through a porous medium.

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

The capacity of material to transmit water or other fluids.

1733, from permeable + -ity, or else from French perméabilité.

The property of permitting liquids or gases to pass through. A highly permeable soil, such as sand, allows a liquid to pass through quickly. Clay has a low permeability.

measure of a substance's ability to have a another substance penetrate or diffuse it.

The portion of the hydraulic conductivity of a porous medium that is dependent on the pore structure only: where K is hydraulic conductivity, k is permeability, ρ isdensity, μ is dynamic viscosity, an [..]

The rate at which water moves through the soil.

how easily soils and rocks transport water horizontally and vertically. Shale is porous and therefore permeable, as is sand and gravel; granite and clay are not.

The relationship of flow per unit area to differential pressure across a filter medium.

noun. the state of being permeable to dissolved compounds, liquids, or gases. A perfect membrane hasn't any permeability, but the majority of all biological membranes are selectively or semi- per [..]

permeability (pop)

The ratio of the magnetic induction of a material to the magnetizing force producing it (B/H).  The magnetic permeability of a vacuum (µo) is 4π×10-7 N/Amp2.

The ability of a medium to pass a fluid under pressure.

The property of a formation which quantifies the flow of a fluid through the pore spaces and into the wellbore.

A measure of the ability of a rock to transmit fluid through pore spaces.

The property of a substance which permits passage of water vapor; moisture vapor transmission.

the ability of a material to allow the passage of a liquid, such as water through rocks. Permeable materials, such as gravel and sand, allow water to move quickly through them, whereas unpermeable material, such as clay, don't allow water to flow freely.

(n) - the degree to which a porous material will allow fluids to pass through it

The qualitative estimate of the ease with which fluids, gases, or plant roots pass through soil.

A measure of the ability of a porous material such as the walls or membranes of cells to transmit fluids.

A measure of the ease with which liquids or gas flow through a reservoir rock. Compare this with Porosity

A material?s capacity to transmit fluids.

A measure of the ease with which a fluid can flow through a porous medium. It depends on the physical properties of the medium, for example: grain size, porosity and pore shape.

The ability of a medium to pass a fluid under pressure.

The property of a formation which quantifies the flow of a fluid through the pore spaces and into the wellbore.

A measurement to test the ability of gas to flow through a porous source, such as sandstone.

Is the measurement of the ease with which a material can be magnetized and how much better than air it is as a path for magnetic fields (permeability of 1).

the ability of rocks or sediments to transmit fluid through interconnected pores or fractures [permeable]

The property of a material by which it changes the flux density in a magnetic field from its value in air.

The ability to transmit fluids through openings, small passageways, or gaps

(n) the property of something that can be pervaded by a liquid (as by osmosis or diffusion)

The property of bulk material (SAND, crushed rock, soft rock in situ) which permit movement of water through its pores.

the capacity or ability of a porous rock, sediment, or soil to allow the movement of water through its pores

A measure of the ease with which water penetrates a material.

The ability of a rock or other material to allow water to flow through its interconnected spaces. Permeable bedrock makes a good aquifer, a rock layer that yields water to wells. See porosity

A measure of the rate with which air, HTMLContents, and water penetrate the soil.

A measure of how easily a magnetic field flows through a material.

The measure of the characteristic of a medium to support the formation of a magnetic field. It indicates degree of magnetisation that a material obtains in response to an applied magnetic field. It is [..]

The capacity of a substance (such as rock) to transmit a fluid. The degree of permeability depends on the number, size, and shape of the pores and/or fractures in the rock and their interconnections. It is measured by the time it takes a fluid of standard viscosity to move a given distance.

      The ability of a magnetic material to conduct magnetic lines of force.

The ability of a porous medium such as soil to transmit fluids or gases.

The ability of a rock or other material to allow water to flow through its interconnected spaces. Permeable bedrock makes a good aquifer, a rock layer that yields water to wells. See porosity. (3 MB porosity animation available)

is a characteristic of a magnetic material which describes the ease of which it can conduct magnetic flux.

Refers to the ability of a rock to transmit fluids. It is a critical factor in production, because it determines the flow rate of oil and gas wells. Permeability is typically measured in darcys (D) or [..]

Definition: Durchlässigkeit

The ease with which magnetic material will conduct lines of magnetic flux.

"Extent to which a boundary allows psychological or behavioral aspects of one role or domain to enter another." (Desrochers & Sargent) "Permeability is the degree to which a role allows one...

The ability for another material (typically air or water, though sometimes dust) to permeate the material in question.

The rate at which water passes through the soil, usually measured in a laboratory.

describes the extent to which urban forms permit (or restrict) movement of people or vehicles in different directions. A permeable layout allows for visible and frequent access routes through an area.

The capacity of a substance (for example rock or soil) to allow water to pas through it.

A qualitative description of the relative ease with which rock, soil, or sediment will transmit a fluid (liquid or gas). Often used as a synonym for hydraulic conductivity or coefficient of permeabili [..]

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

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

The degree to which groundwater can move freely through the rocks and soil of an aquifer, indicative of the degree to which pores and fractures in rocks are actually interconnected. A typical measure [..]

is the property of porous materials indicating the ease with which liquids or gases will be transmitted through a soil or other porous material. Permeabilities are not affected by changing the type of liquid.  

Property of Membranes and other structures to permit passage of Light, Heat, Gases, liquids, metabolites, and mineral Ions.

The property of Blood Capillary Endothelium that allows for the selective exchange of substances between the Blood and surrounding Tissues and through membranous barriers such as the Blood-Air Barrier [..]

A quality of Cell Membranes which permits the passage of Solvents and solutes into and out of Cells.

The property of Dental Enamel to permit passage of Light, Heat, Gases, liquids, metabolites, mineral Ions and other substances. It does not include the penetration of the Dental Enamel by microorganis [..]

The property of Dentin that permits passage of Light, Heat, Cold, and chemical substances. It does not include penetration by microorganisms.

The property of Teeth to permit passage of Light, Heat, Gases, liquids, metabolites, mineral Ions and other substances. It does not include the penetration of the Teeth by microorganisms.

The permeability or magnetic Conductivity of a Material is an indication of how well the magnetic flux is conducted in the relevant material. It can be expressed as the ratio of magnetic flux density [..]

A measure of water vapor transmission. The ability of a substrate to resist transfer of water vapor from one side to the other.

Property of soft iron to receive magnetism. 2. Capacity of a space to allow entry of water, having due regard to contents of the space.

Property of membranes and other structures to permit passage of light, heat, gases, liquids, metabolites, and mineral ions.

The rate at which a liquid or gas passes through a membrane or other porous material.

Ability to be permeated by gases or liquids; a measure of the freedom with which gases or liquids can diffuse through a material.

A measure of resistance to flow reported in units of Darcies, for filter aid products. For use in filtration, filter aid products are usually processed to provide a range of filtration rates that are closely related to their permeability. Diatomite filter aids are available in a wide range of permeability, from about 0.001 to about 15 Darcies. The [..]

the speed at which a membrane will allow substances to pass through it.

The property of a material or soil that permits considerable movement of water through it when it is saturated.

A term referring to the ability of one material to allow another to penetrate and pass through. Pesticide

A measure of the rate with which air, roots, and water penetrate the soil.

A measure of the rate at which water can percolate through soil.

The ability of a material to allow the passage of a liquid, such as water through rocks. Permeable materials, such as gravel and sand, allow water to move quickly through them, whereas unpermeable mat [..]

a measure of a porous material's ability to allow fluids or gases to flow through its pores. An important property of rocks that determines how much and how rapidly fluids or gases can move through them; for example, how much water can be pumped from an aquifer (see: porosity).

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

A measure of fabric porosity or openness, expressed in cubic feet of air per minute per square foot of fabric at a 0.5" w.c. Pressure differential.

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

A measure of fabric porosity or openness, usually expressed in cfm at a 0.5" H²0 pressure differential.

A measure of the ability of a material to transmit fluids or gases.

The rate at which water moves through the soil.

  A measure or rating of a material’s ability to permit moisture to pass through it.

the ability of a water bearing material to transmit water. It is measured by the quantity of water passing through a unit cross section, in a unit time, under 100 percent hydraulic gradient.

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

The ability of water to move through your soil.

the property of a membrane or other material that permits a substance to pass through it.

A measure of the ease with which a fluid flows through rock in response to pressure differences (measured in darcys). Permeability implies that there is some degree of porosity in the rock.

The property of a formation which quantifies the flow of a fluid through the pore spaces and into the wellbore.   High permeability means fluid passes through the rock easily Petroleum

The degree to which gas or fluids can move through a porous material, such as rocks.

The permeability of a rock is the measure of the resistance to the flow of liquid through the rock.  High permeability means fluid passes through the rock easily.

A measure of the ability of a rock to permit fluids to be transmitted through it; it is controlled by pore size, pore throat geometry, and pore connectivity. Permeability is typically reported in darcies. 

The property of a formation which quantifies the flow of a fluid through the pore spaces and into the wellbore.   

The capacity of a reservoir rock to transmit fluids.

The degree to which a rock will allow liquid or gas to pass through it. Effective permeability refers to the permeability of a rock to fluid when the saturation of the fluid is less than 100%.

measure of the resistance of rock to movement of fluids. Rocks may have holes in them (porosity), but if these holes do not connect, the permeability can be drastically reduced.

the capacity of a reservoir rock to transmit fluids; how easily fluids can pass through rock.

  A measure of the resistance of rock to the movement of fluids. Rocks may have holes or void spaces in them (porosity), but if these holes do not connect, the permeability can be drastically reduced. [..]

Ability of rock to transmit fluids through pore spaces.

a measure of the capacity of a rock to allow water or other fluids such as oil to pass through it. Dependent on the connectivity of the pore spaces.

The measure of a formation's ability to transmit fluids and/or gases.

The state or quality of a material or membrane that causes it to allow liquids or gases to pass through it.

The capacity of a reservoir rock to transmit fluids; how easily fluids can pass through a rock. The unit of measurement is the millidarcy.

The capability of a porous rock or sediment to permit the flow of fluids through its pore spaces. Petrophysics

A measure of the ability of a rock to transmit fluid through pore spaces. Platform

A measure of the ease with which a fluid such as water or oil moves through a rock when the pores are connected. Geologists express permeability in a unit named the darcy, but oilmen use the millidarcy because most of the rocks they come in contact with are not very permeable.

Ability to transmit water savings.

A measure of the ability of a rock to transmit fluid through pore spaces.

A measure of the ability of a material to allow fluids to pass through it.

Permeability is the measure of how fluids or natural gas move through the rock (typically measured in "millidarcies")

The capacity of a reservoir rock to transmit fluids; how easily fluids can pass through a rock.

A measure of the ease with which a fluid such as water or oil moves through a rock when the pores are connected. Geologists express permeability in a unit named the darcy, but oilmen use the millidarcy because most of the rocks they come in contact with are not very permeable.

The measure of a rock's ability to transmit fluids; a measure of the ease with which fluids can flow through a porous rock.

The degree to which a rock will allow liquid or gas to pass through it. "Effective permeability" refers to the permeability of a rock to fluid when the saturation of the fluid is less than 100%.

The measurable capacity of a rock to allow a fluid to flow through it. Along with porosity, permeability is one of the most critical properties of the reservoir rock, as oil or  gas must be able to flow from the rock into the wellbore for a well to be commercially productive. Today, in low-permeability rock such as shale, oil and gas producers use [..]

Measure of the resistance of rock to movement of fluids. Rocks may have holes in them (porosity), but if these holes do not connect, the permeability can be drastically reduced.

the relationship of flow per unit area to differential pressure across a filter medium.

measure of the ease in which fluid flows through connecting pores spaces of a formation or cement. Plug and Abandon (P&A)

The ability of rocks to transmit fluids (liquids and gases).

The capacity of a geologic formation to allow water, natural gas or oil to pass through it. Porosity.

1. The ability of a rock to transmit fluid through the pore spaces. – a key influence on the rate of flow, movement and drainage of the fluids. 2. A measure of the ease with which a fluid flows through the connecting pore spaces of rock or cement.

Measured in millidarcies (mD), measures how connected the pores are within the rock, indicating how easily oil will flow through it.

A measure of the capacity of rock or stratum to allow water or other fluids such as oil to pass through it. 

The capacity of a rock for transmitting a fluid. Permeability depends on the size and shape of pores in the rock, along with the size, shape, and extent of the connections between pore spaces.

The ability of a rock to transmit fluid through the pore spaces. Porosity and Permeability are not directly related as a rock may possess high porosity but have low permeability.

Permeable materials have many inter-connected pores or fractures which allow fluids to flow through them. The more connected these spaces are, the more permeable the material. Shales can be relatively [..]

A measure of the ease with which a fluid such as water or oil moves through a rock when the pores are connected. Geologists express permeability in a unit named the darcy, but oilmen use the millidarcy because most of the rocks they come in contact with are not very permeable.

The quantification of how easily fluids, such as oil, gas, and water, flow through the pore spaces in a geologic formation and into the wellbore.

This is the measure of the ability of a porous rock to allow fluids to pass through it. High permeability in the surrounding rocks is needed for the formation of gas reserves.

Ability to flow or transmit fluids through a porous solid such as rock

the ability of a water bearing material to transmit water. It is measured by the quantity of water passing through a unit cross section, in a unit time, under 100 percent hydraulic gradient. permeable reactive barriers

the ability of a rock or sediment to let fluids pass through its open spaces, or pores

The capacity of a structure to permit the movement of a fluid trought it.

the ability of a rock to transmit water[10]

 the ease of fluid flow through a porous or pervious material. pH:

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

Synthetic turf and the base on which it is installed is usually designed to allow for water to percolate through it so that there is no standing water on the surface. Water permeability rates for both the field’s surfacing and the field base materials should be designed to accommodate the local weather and rainfall patterns.

A qualitative description of the relative ease with which rock, soil, or sediment will transmit a fluid (liquid or gas). Often used as a synonym for hydraulic conductivity or coefficient of permeability.

The measure of the ability of a material to act as a path for magnetic lines of force.

The ability of a body to pass fluid under pressure.

A measure of how easily magnetic lines of force can pass through a material. The permeability of a material is defined as the constant of proportionality between the magnetic flux density and the magnetic field. It is a constant for a given magnetic material in the linear region.

The ability of surface soils or materials to permit the movement of water through them when they are saturated.