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permeability

per·me·a·bil·i·ty [ pùrmee ə bíllətee ] (plural per·me·a·bil·i·ties)


noun 
Definition:
 
1. permeable nature: the property of being permeable

2. rate substance passes through porous medium: the rate at which something such as a liquid or a magnetic field passes through a membrane or other medium

3. magnetic property: the property of a material to alter a magnetic field in which it is placed, or a measure of this property.
Symbol  μ


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