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operating system

 
Noun operating system has 1 sense
  1. operating system, OS - (computer science) software that controls the execution of computer programs and may provide various services
    --1 is a kind of software, software system, software package, package
    --1 is a part of platform
    --1 has parts: supervisory program, supervisor, executive program
    --1 has particulars:
     DOS, disk operating system; UNIX, UNIX system, UNIX operating system
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