- 界面活性剂 jièmiànhuóxìngjì surfactantA substance that reduces surface tension, such as a detergent, emulsifier, or foaming agent; soap is a common example.
- 表面活性剂 biǎomiànhuóxìngjì surfactantA substance that reduces the surface tension of a liquid; commonly used as a detergent, emulsifier, or foaming agent.