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[trans-mit-er, tranz-] /trænsˈmɪt ər, trænz-/
a person or thing that transmits.
Also called transmitting set. Radio. 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.
the part of a telephonic or telegraphic apparatus that converts sound waves or mechanical movements into corresponding electric waves or impulses.
Biochemistry. neurotransmitter.
Origin of transmitter
1720-30; transmit + -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for transmitter
Contemporary Examples
Historical Examples
  • The part spoken to is called the transmitter, and the part which gives sound out again is called the receiver.

    Things a Boy Should Know About Electricity Thomas M. (Thomas Matthew) St. John
  • Mr. Tainter saw me disappear from the window, and at once spoke to the transmitter.

  • With dragging feet he walked to the transmitter, his expression grim in the realization of failure.

  • He took the receiver from its hook and spoke into the transmitter.

    Cy Whittaker's Place Joseph C. Lincoln
  • His mind is after all rather the recipient and transmitter of knowledge, than the originator of it.

  • He switched off the transmitter for a moment and faced Chet.

    The Finding of Haldgren Charles Willard Diffin
  • An example of the single-contact type is the Blake transmitter, long familiar in America.

  • "Let me get to him——," growled Coast, pushing close to the transmitter.

    The Vagrant Duke George Gibbs
  • Also, if distinction were impossible, even with one transmitter in action its message might go to undesired stations.

    How it Works Archibald Williams
British Dictionary definitions for transmitter


a person or thing that transmits
the equipment used for generating and amplifying a radio-frequency carrier, modulating the carrier with information, and feeding it to an aerial for transmission
the microphone in a telephone that converts sound waves into audio-frequency electrical signals
a device that converts mechanical movements into coded electrical signals transmitted along a telegraph circuit
(physiol) short for neurotransmitter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for transmitter

"apparatus for receiving radio signals," 1934, agent noun from transmit.

Online Etymology Dictionary, © 2010 Douglas Harper
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transmitter in Science
A device that converts sound, light, or electrical signals into radio, microwave, or other electrical signals of sufficient strength for the purpose of telecommunication. Compare receiver.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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