界かい面めん活かっ性せい

noun, noun which may take the genitive case particle 'no'

surface activity; surface active

Technical term used in chemistry and materials science to describe the property of a substance that affects the surface tension of a liquid. Often appears in compounds like 界面活性剤 (surfactant).

• この物ぶっ質しつは高たかい界かい面めん活かっ性せいを示しめす。

  This substance exhibits high surface activity.

• 界かい面めん活かっ性せい剤ざいは洗せん剤ざいによく使つかわれる。

  Surfactants are often used in detergents.