cos

Definitions

Food

Military

  • acronym forchief of staff
    (written as COS)
  • noun the most senior staff officer in a headquarters.

General Science

  • abbreviation forcosine

Electronics

  • acronym forclass of service
    (written as COS)
  • A given level of service purchased from a telephone company. For instance, measured-rate residential, or flat-rate business.
  • A given level of service purchased from a public data network.
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