NCO

NCO (plural NCOs)

1. (electronics) Initialism of Number Controlled Oscillator.
2. (military) Initialism of non-commissioned officer.
   • 1989, H. T. Willetts (translator), Aleksandr Solzhenitsyn (author), August 1914, Farrar, Straus and Giroux, →ISBN, page 109:

     There was for some reason a shortage not only of regular private soldiers but of officers and NCOs.

• VCO

• CNO, CON, Con, NOC, OCN, ONC, con, con-, onc