- One that transmits: a transmitter of disease. (noun)
- An electronic device that generates and amplifies a carrier wave, modulates it with a meaningful signal derived from speech or other sources, and radiates the resulting signal from an antenna. (noun)
- The portion of a telephone that converts the incident sounds into electrical impulses that are conveyed to a remote receiver. (noun)
- A telegraphic sending instrument. (noun)
- A neurotransmitter. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.