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8 ENTRIES FOUND:

SOS

noun \ˌes-(ˌ)ō-ˈes\

: a signal used by ships and airplanes to call for help

Full Definition of SOS

1
:  an internationally recognized signal of distress in radio code --- used especially by ships calling for help
2
:  a call or request for help or rescue

First Known Use of SOS

1910

SOS

abbreviation    (Medical Dictionary)

Medical Definition of SOS

if occasion require; if necessary—used in writing prescriptions

Origin of SOS

Latin si opus sit

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