1. the quality or state of having pores or small openings that allow liquids or gases to pass through
2. the ratio of the volume of pores in a material to its total volume
Usage: technical; geology; materials science

Examples

• The porosity of the soil determines how well water drains through it.
• Scientists measured the porosity of the rock samples to understand groundwater flow.
• High porosity in concrete can lead to structural problems over time.
• The porosity of the sponge makes it excellent for absorbing liquids.
• Engineers must consider the porosity of materials when designing filtration systems.
• The limestone’s natural porosity allows oil to accumulate in underground reservoirs.