distress signal

Definitions

Electronics

  • A brief transmission sent by a craft or vehicle, such as a ship or an airplane, indicating a situation of grave and/or imminent danger, and thereby requesting immediate assistance. One such signal that is internationally recognized is the French expression m 'aider, which means "come help me!" The English phonetic equivalent of this term is mayday.

Military

  • noun a signal signifying that a person, ship or aircraft is in danger
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