The word 发送 is formed by combining two individual characters, each contributing its core meaning to create a new, unified concept. The first character, 发 (fā), carries the fundamental idea of "to issue", "to dispatch", or "to emit". The second, 送 (sòng), contributes the essential notion of "to deliver", "to send to", or "to see off". When fused, their actions conceptually sequence and merge: 发 initiates the action of releasing something from a source, and 送 completes the action by extending it toward a destination, resulting in the integrated meaning of "to send out" or "to transmit", as in sending a message or dispatching an item.