surface-active agent sur·fa·ceac·tiveagent fairly common noun 1. a substance capable of reducing the surface tension of a liquid in which it is dissolved Synonymswetting agentwettersurfactantsurface-active agent Related words Broader terms chemical agent Narrower terms emulsifierdetergent WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
