Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “SOS”

SOS

noun [S]     /ˌes.əʊˈes/ US  /-oʊˈ-/
a request for help , especially because of danger : Within an hour of the ship transmitting an SOS ( message / call ), six boats had arrived and started a rescue operation . The hospital sent out an SOS for extra blood supplies .Signs, signals and symbolsSpecific signs and symbolsEmergency services in general
(Definition of SOS noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of SOS

Definitions of “SOS” in other dictionaries

Word of the Day

drizzle

to pour liquid slowly over something, especially in a thin line or in small drops

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More