- 1 [uncountable] the activity or process of expressing ideas and feelings or of giving people information Speech is the fastest method of communication between people. All channels of communication need to be kept open. Doctors do not always have good communication skills. nonverbal communication We are in regular communication by mail.
- 2 [uncountable] communications [plural] methods of sending information, especially telephones, radio, computers, etc. or roads, and railroads communication systems/links/technology The new airport will improve communications between the islands. Snow has prevented communication with the outside world for three days.
- 3 [countable] (formal) a message, letter or telephone call a communication from the president of the company
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