透とう水すい性せい

noun

permeability; water permeability

Technical term used in geology, civil engineering, and materials science to describe how easily water passes through a substance.

• この土ど壌じょうは透とう水すい性せいが高たかいため、水みずはけが良よい。

  This soil has high permeability, so it drains well.

• 透とう水すい性せい舗ほ装そうは雨う水すいを地ち下かに浸しん透とうさせる。

  Permeable pavement allows rainwater to infiltrate into the ground.