The act of sending or passing something from one place, person, or thing to another, such as signals, diseases, or power; also, the system in a vehicle that sends power from the engine to the wheels.
It comes from Latin 'transmissio', from 'transmittere' meaning 'to send across' ('trans' = across + 'mittere' = to send). The mechanical sense developed with engines and machinery.
From radio shows to viruses to car engines, 'transmission' is always about something invisible moving through a system—energy, information, or illness. The same root idea links a radio broadcast, a pandemic, and the gears under your car.
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