telegraphic signal
- noun
- /ˌtɛlɪˈɡræfɪk ˈsɪɡnəl/
- Archaic
- Early communication devices relied on the telegraphic signal to convey urgent news.
Examples
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The telegraphic signal was received clearly.
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The operator received a telegraphic signal confirming the completion of the track.
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A series of short and long sounds made up the telegraphic signal sent across the wire.
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Can you send a telegraphic signal to the station?
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The operator decoded the telegraphic signal using Morse code during the transmission.
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After sending the telegraphic signal, they waited for a response from the other station.
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He received a telegraphic signal that confirmed the arrival time of the train.
Synonyms
A change in electric current or voltage that carries information in devices
A message sent by radio using dots and dashes
How Strong
Surface Forms
Morphology
The phrase is compositionally regular — an adjective modifying a noun — so a learner who knows 'telegraphic' and 'signal' can infer it denotes a signal with telegraphic properties. However, 'telegraphic' is ambiguous (relating to the telegraph vs. meaning 'concise/brief'), and the specific technical sense 'transmitted via a telegraph/Morse code' may not be fully predictable at B1 without exposure.
Etymology
Telegraphic signal comes from early telegraph machines: telegraphic meant the telegraph machine and signal meant the short and long sounds or clicks sent along a wire. So, it means 'a signal sent by telegraph'.