中断 (zhōng duàn) is a verb meaning 'to interrupt' or 'to suspend'—referring to the sudden stopping or breaking of an ongoing process, activity, connection, or state. The character 中 (zhōng) means 'middle' or 'during', and 断 (duàn) means 'to break' or 'to cut off'. Together, they literally suggest 'breaking in the middle', capturing the idea of an abrupt halt before completion. It’s commonly used in formal, technical, or medical contexts—such as interrupting a conversation, suspending a service, halting data transmission, or stopping medication.

This word emphasizes unintentional or externally caused cessation rather than voluntary pausing (which uses 暂停). It often carries a slightly negative or problematic connotation—implying disruption, failure, or interference. While it can be transitive (e.g., 中断会议), it’s also frequently used in passive or impersonal constructions (e.g., 网络中断 — 'the network was interrupted'). It’s not typically used for brief, casual pauses in speech (use 打断 instead for that).