telegraphy

From telegraph +‎ -y (“forming abstract nouns”), q.v., equivalent to tele- (“far, distant, telegraph”) +‎ -graphy (“writings on a subject, area of study, etc.”).

• (Received Pronunciation) IPA^(key): /təˈlɛɡɹɑːfi/
• (General American) IPA^(key): /təˈlɛɡɹəfi/

telegraphy (usually uncountable, plural telegraphies)

1. Any process for transmitting arbitrarily long messages over a long distance using a code, especially by means of electrified wires or radio waves using Morse code.
2. The science and techniques used to enact this process.
3. The devices and networks used to enact this process.

• radio telegraphy
• radiotelegraphy
• wireless telegraphy