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a device used to send messages over long distances through wires using electrical signals, often in the form of Morse code
- Telegraphy was an important communication tool in the 19th century.
- The invention of telegraphy revolutionized long-distance communication.
- Telegraphy allowed people to communicate across countries in minutes.
- The telegraphy machine was an important tool during the 19th century.
- Telegraphy replaced slower forms of communication like letters.
Synonyms:
2
communicating at a distance by electric transmission over wire