surfactant
Definitions
A substance that tends to reduce the surface tension of a liquid in which it is dissolved.
A chemical agent that increases the spreading and wetting properties of a liquid by lowering its surface tension.
Examples
The soap acts as a surfactant, breaking down the surface tension of water to lift grease from the dishes.
Scientists are studying how the surfactant in the lungs helps prevent the collapse of tiny air sacs during breathing.
Synonyms
surface-active agent detergent emulsifier wetting agent dispersant