透とう湿しつ性せい

noun

moisture permeability

Technical term used in materials science, textiles, and packaging to describe how well a material allows moisture vapor to pass through.

• このジャケットは透とう湿しつ性せいが高たかいので、蒸むれにくい。

  This jacket has high moisture permeability, so it doesn't get stuffy easily.

• 透とう湿しつ性せいフィルムは食しょく品ひん包ほう装そうによく使つかわれる。

  Moisture-permeable films are often used in food packaging.