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Definition of OS abbreviation from the Oxford Advanced Learner's Dictionary

OS

abbreviation
 
/ˌəʊ ˈes/
 
/ˌəʊ ˈes/
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  1. (computing) operating system
  2. ordinary seaman
  3. Ordnance Survey
See OS in the Oxford Advanced American Dictionary
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proverb
noun
 
 
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Language
B2
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