1. The quality or state of being permeable; the degree to which a material allows liquids or gases to pass through it.
Usage: Plural form of permeability; Commonly used in physics, geology, and materials science
2. In physics, the ability of a material to support the formation of a magnetic field within itself.
Usage: Technical term used in electromagnetism and materials science

Examples

• The permeabilities of different soil types determine how quickly water drains through them.
• Scientists measured the permeabilities of various fabrics to assess their effectiveness as filters.
• The permeabilities of these membranes allow oxygen to pass through while blocking larger molecules.
• Geologists study rock permeabilities to predict groundwater flow patterns.
• The magnetic permeabilities of different materials vary significantly.
• Engineers compare the permeabilities of construction materials when designing water-resistant barriers.