transmitter

noun

1. someone who transmits a message

   noun.person

   Synonyms sender

   Source: WordNet 3.0

2. any agent (person or animal or microorganism) that carries and transmits a disease

   noun.object

   Examples

   Aphids are transmitters of plant diseases.

   Synonyms vector

   Source: WordNet 3.0

3. set used to broadcast radio or tv signals

   noun.artifact

   Source: WordNet 3.0

4. One who, or that which, transmits; specifically, that portion of a telegraphic or telephonic instrument by means of which a message is sent; -- opposed to <i>receiver</i>.

   noun

   Source: webster1913