The Chinese word **终端** (zhōngduān) is a modern compound noun formed by combining two characters, each contributing to its conceptual meaning: **终** (zhōng), meaning "end" or "terminate," and **端** (duān), meaning "end," "extremity," or "point." Together, they literally convey the idea of a "terminal end" or "terminus." In its technological adaptation, this term semantically extends this core idea to refer to an endpoint in a network or system—specifically, a **terminal** device (like a computer, smartphone, or point-of-sale machine) that serves as the final interface where users interact with or access data from a larger centralized system, thus sitting at one "end" of the communication chain.