distress signal

distress signal
distress signal [n] alarm burglar alarm, call for help*, danger signal, fire alarm, mayday, SOS, warning signal; concepts 269,463

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  • Distress signal — Call for help redirects here. For the TV show, see Call for Help. A distress signal is an internationally recognized means for obtaining help. Distress signals take the form of or are commonly made by using radio signals, displaying a visually… …   Wikipedia

  • distress signal — 1. a signal used, or designed to be used, by persons in peril, for the purpose of summoning aid, indicating their position, etc., as a radio code sign, aerial flare, flag hoist, or the like. Cf. distress call (def. 1). 2. an indication, esp. a… …   Universalium

  • Distress signal unit — A Distress Signal Unit, or D.S.U , is a piece of equipment used by firefighters while working in hazardous areas. Normally used in conjunction with breathing apparatus, it is a small, battery powered item attached to the breathing apparatus… …   Wikipedia

  • distress signal — noun an internationally recognized signal sent out by a ship or plane indicating that help is needed • Syn: ↑distress call • Hypernyms: ↑signal, ↑signaling, ↑sign • Hyponyms: ↑SOS, ↑Mayday …   Useful english dictionary

  • distress signal — A signal transmitted by an aircraft in distress. It could be transmitted on radio as Mayday or by light indications …   Aviation dictionary

  • distress signal — /dəsˈtrɛs sɪgnəl/ (say duhs tres signuhl) noun a signal by persons in danger summoning aid and indicating their position by rocket, radio code, flag, or any other means …  

  • distress signal — (Roget s 3 Superthesaurus) n. SOS, Mayday, flare …   English dictionary for students

  • distress signal — sign of danger or trouble, cry for help …   English contemporary dictionary

  • Mayday (distress signal) — Mayday is an emergency code word used internationally as a distress signal in voice procedure radio communications. It derives from the French venez m aider , meaning come help me . [ [http://www.etymonline.com/index.php?search=mayday… …   Wikipedia

  • Alpine distress signal — The Alpine distress signal is a distress signal in the case of mountain emergency, an emergency in alpine areas. There are also special emergency call numbers, for use with the telephone service by which the emergency services can be contacted.… …   Wikipedia

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