- (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 )医学 a substance that keeps the lungs working well to prevent breathing problems 肺泡表面活性物质(维持肺部良好工作、防止呼吸困难)
Word Origin1950s: from surf(ace)-act(ive) + -ant.