‘缓冲’ literally combines 缓 (‘slow, moderate’) and 冲 (‘rush, impact’), meaning to reduce the force or effect of a sudden change, shock, or pressure. As a noun, it refers to a buffer — a physical or abstract element that absorbs or softens impact. As a verb, it means ‘to buffer’ or ‘to cushion.’ It’s widely used in technical, medical, economic, and everyday contexts — for example, describing how wetlands buffer floodwaters, how antacids buffer stomach acid, or how savings buffer against financial hardship.

The word carries a sense of protection, moderation, and transitional support. Unlike more colloquial terms like ‘减压’ (to relieve stress), ‘缓冲’ emphasizes structural or functional mitigation — often implying an intermediary layer or mechanism that intervenes between two forces or states. It’s neutral in register and common in both written and spoken Mandarin, especially in explanations of cause-effect relationships involving delay, absorption, or regulation.