Explain/define this term: magnetic permeability

Magnetic permeability is a measure of how easily a material can become magnetized in the presence of an external magnetic field. It is a property that describes the ability of a material to support the formation of a magnetic field within itself. Materials with high permeability are easily magnetized and have a stronger magnetic field, while materials with low permeability resist magnetization and have a weaker magnetic field. Magnetic permeability is also influenced by factors such as temperature, pressure, and the frequency of the magnetic field.