surfactant
noun /sɜːˈfæktənt/
/sɜːrˈfæktənt/
[countable, uncountable]- (specialist) a substance that reduces the surface tension of a liquid, often forming bubbles in the liquid
表面活性剂(减少液体表面张力,常形成气泡) - (medical
) a substance that keeps the lungs working well to prevent breathing problems医学 肺泡表面活性物质(维持肺部良好工作、防止呼吸困难)
词源1950s: from surf(ace)-act(ive) + -ant.