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Operating system

//ˈɒpəˌɹeɪtɪŋ ˌsɪstəm// noun

Definitions

Noun
  1. 1
    Software that is designed for controlling the allocation and the use of various hardware resources to tasks and remote terminals.

    "The operating system is the key mediator of access by processes within a computer system."

  2. 2
    (computer science) software that controls the execution of computer programs and may provide various services wordnet

Etymology

From operating + system. First use appears c. the 1950s.

See also for "operating system"

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