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Noun: petty officer  'pe-tee'ó-fi-su(r)
  1. A noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army
    "The petty officer supervised the maintenance crew";
    - PO, P.O.

Derived forms: petty officers

Type of: enlisted officer, noncom [informal], noncommissioned officer

Encyclopedia: Petty officer, 2nd class