transmitter: Meaning and Definition of

trans•mit•ter

1. a person or thing that transmits.
2. Also called transmit&prim;ting set&sec;.a device for sending electromagnetic waves; the part of a broadcasting apparatus that generates and modulates the radiofrequency current and conveys it to the antenna.
3. the part of a telephonic or telegraphic apparatus that converts sound waves or mechanical movements into corresponding electric waves or impulses.
4. neurotransmitter.