MOS phrase 1noun 8 phrase1 •Without a synchronous audio track. noun8 •Initialism of military occupational specialty."I was a marine. My MOS was 0311," he said. •Initialism of metal oxide semiconductor. •Initialism of manual of style. •Initialism of mobile operating system. •Initialism of member of the opposite sex. •Initialism of man on the street. •Initialism of member of the service."We have an MOS down," the dispatcher said. •Initialism of maintenance operating system.
