Hvad er transmission? Hvad er transmission? The act or process of transmitting. The fact of being transmitted.Something, such as a message, that is transmitted.An assembly, as in a motor vehicle, that transmits power from an engine to a driving axle, usually having a manually or automatically adjustable mechanism to control the balance of power and speed. Also called gearbox.The sending of a signal, picture, or other information from a transmitter.