transmitter
n. countablen. a piece of equipment that sends out radio, television, or phone signals through the air. It can also describe a person or thing that passes a disease or information to others.
n. an electronic device that generates and radiates radio frequency electromagnetic waves via an antenna. In a biological or social context, it refers to an agent that conveys a pathogen or data from one host to another.
The radio station needs a new transmitter to reach the whole city.
Engineers climbed the mountain to repair the damaged transmitter after the winter storm knocked out the local signal.
While the physical transmitter facilitates the broadcast of the signal, the strength of the reception depends heavily on the geographical terrain and atmospheric conditions between the tower and the receiver.
From transmit + -er.
Commonly used in technical contexts regarding telecommunications or in medical contexts regarding the spread of viruses.