telegraphy : Idioms & Phrases
Duplex telegraphy
- a system of telegraphy for sending two messages over the same wire simultaneously.
Webster 1913
electro-telegraphy
E*lec`tro-te*leg"ra*phy noun
Definitions
The art or science of constructing or using the electric telegraph; the transmission of messages by means of the electric telegraph.
Webster 1913
wireless telegraphy
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noun telegraphy that uses transmission by radio rather than by wire
radiotelegraph; radiotelegraphy.
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noun the use of radio to send telegraphic messages (usually by Morse code)
wireless telegraph; radiotelegraph; radiotelegraphy.
