- a signal of distress in code ( ? ? ? ) used internationally in wireless telegraphy, as by ships
- Informal any call for help
- The letters that are represented by the Morse code signal · · · - - - · · ·, used as an international distress signal, especially by ships and aircraft.
- A call or signal for help.
- The conventional Morse code call made by a ship in distress.
- The keel has been scuppered "” send out an SOS.
From the letters represented by the signal, chosen as a sequence that is easy to recall and transmit (Â· Â· Â· "” "” "” Â· Â· Â·); it is not, as is commonly believed, an abbreviation for "save our souls", "save our ship" or any other phrase.
- Secretary of State
- special order sale
sos - Computer Definition
(1) (Silicon On Sapphire) An MOS chip-fabrication method that places a thin layer of silicon over a sapphire substrate (base). This technique was used for earlier LSI fabrication, but not considered useful for higher-density VLSI chips. See SOI.
(2) (Systems On Silicon) A complete system on a single chip. See SoC.
(3) (System Of Systems) An umbrella term for integrating and managing multiple independent, self-contained systems as a single entity.
(4) (Server Operating System) An operating system that resides on the server.
(5) (Sophisticated Operating System) The operating system in the Apple III. See Apple III.