The word 传输 is formed by combining two meaningful characters, each contributing a key aspect to the unified concept. The first character, 传 (chuán), carries the core idea of "to pass on", "to transmit", or "to relay". The second character, 输 (shū), adds the complementary notion of "to transport", "to convey", or "to send". When paired, their individual meanings fuse into a single, cohesive concept where 传 emphasizes the act of passing something along (like information or a signal) and 输 emphasizes the movement or delivery of that thing to another point, together precisely capturing the idea of "transmission" as in data or signal transmission.