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transmitter

[trans-mit-er, tranz-] /trænsˈmɪt ər, trænz-/
noun
1.
a person or thing that transmits.
2.
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.
3.
the part of a telephonic or telegraphic apparatus that converts sound waves or mechanical movements into corresponding electric waves or impulses.
4.
Biochemistry, neurotransmitter.
Origin
1720-1730
1720-30; transmit + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for transmitting set

transmitter

/trænzˈmɪtə/
noun
1.
a person or thing that transmits
2.
the equipment used for generating and amplifying a radio-frequency carrier, modulating the carrier with information, and feeding it to an aerial for transmission
3.
the microphone in a telephone that converts sound waves into audio-frequency electrical signals
4.
a device that converts mechanical movements into coded electrical signals transmitted along a telegraph circuit
5.
(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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transmitting set in Science
transmitter
  (trāns'mĭt-ər)   
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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