Summary: 政变 (zhèngbiàn) is the primary Chinese word for a “coup d'état,” a sudden, illegal, and often violent seizure of political power. It describes the overthrow of a government by a small group from within the existing state, such as the military, rather than a popular revolution. Understanding the meaning of 政变 is essential for discussing historical events, global news, and political instability in Chinese. This guide breaks down its characters, cultural context, and practical usage with clear examples for learners.