Sometimes, telecommunication. (used with a singular verb) the transmission of information, as words, sounds, or images, usually over great distances, in the form of electromagnetic signals, as by telegraph, telephone, radio, or television.
Sometimes, telecommunication. (used with a singular verb) the science and technology of such communication.
telecommunication, a message so transmitted.
of or pertaining to telecommunications.

1930–35; tele-1 + communication + -s3 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
telecommunication (ˌtɛlɪkəˌmjuːnɪˈkeɪʃən)
the telegraphic or telephonic communication of audio, video, or digital information over a distance by means of radio waves, optical signals, etc, or along a transmission line

telecommunications (ˌtɛlɪkəˌmjuːnɪˈkeɪʃənz)
(functioning as singular) the science and technology of communications by telephony, radio, television, etc

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1932, from Fr. télécommunication (see tele- + communication).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
telecommunication   (těl'ĭ-kə-my'nĭ-kā'shən)  Pronunciation Key 
The science and technology of sending and receiving information such as sound, visual images, or computer data over long distances through the use of electrical, radio, or light signals, using electronic devices to encode the information as signals and to decode the signals as information.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The optimism has been tempered of late by business woes among telecommunication
  companies, but the technology remains impressive.
Allow power grid and telecommunication links to piggyback the corridor and help
  underwrite costs.
Today censor and cutting telecommunication lines can not hide the truth.
Some line installers, called cable splicers, specialize in splicing together
  two telecommunication lines.
Related Words
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