telegraphy

[tuh-leg-ruh-fee]
noun
the art or practice of constructing or operating telegraphs.

Origin:
1785–95; tele-1 + -graphy

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Collins
World English Dictionary
telegraphy (tɪˈlɛɡrəfɪ)
 
n
1.  See also facsimile a system of telecommunications involving any process providing reproduction at a distance of written, printed, or pictorial matter
2.  the skill or process of operating a telegraph

Collins English Dictionary - Complete & Unabridged 10th Edition
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FOLDOC
Computing Dictionary

telegraphy definition

communications, history
A historical term for communication, either wired or wireless, using Morse code. The term is used in contrast with telephony meaning voice transmission. Telegraphy is sometimes (somewhat incorrectly) referred to as "continuous wave" or CW transmission.
(2009-11-24)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
Connor's schooling was neglected and he never graduated from high school, but he learned the craft of telegraphy from his father.
As the control operator of a club station transmitting telegraphy practice or information bulletins.
His early experiments included ways to improve and use telegraphy.
Katherine evidently never forgot her telegraphy skills.
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