Pronunciation: /ˈtɛləˌɡræf/
noun a system for transmitting messages or signals to a distant place, especially by means of an electric device consisting essentially of a sending instrument and a distant receiving instrument connected by a conducting wire or other communications channel
A1 The telegraph was used to send messages long distances before phones were invented.
A2 In the past, people used the telegraph to communicate quickly over long distances.
B1 The invention of the telegraph revolutionized communication by allowing messages to be sent almost instantly.
B2 During the 19th century, the telegraph network expanded rapidly across the United States.
C1 The development of the telegraph paved the way for even faster forms of communication, such as the telephone.
C2 The telegraph played a crucial role in shaping global communication networks in the 19th century.
formal The telegraph was a revolutionary form of communication in the 19th century.
informal I sent a telegraph to my friend to let them know I was coming to visit.
slang Back in the day, people used to 'telegraph' each other before texting was a thing.
figurative The sudden silence between them was like a telegraph of their deteriorating relationship.
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