Os

OS Operations Specialist (USN Rating) 操作人员(舰钩挂等级)

OS Own Ship 本船

OS Office Support 办公支持

OS Outsourcing Services 外包服务

OS Output Status 输出状态

OS Opening Snap (mitral valve) 啪的一声打开(二尖瓣)

OS Ohr Somayach (school) Ohr Somayach(学校)

OS Over the Shoulder (cinematography) 肩(电影)

OS Ordnance Specification 军械规格

OS Open Systems 开放系统

OS Operational Superintendence (on overtime forms) 经营监理(加班的形式)

OS Osijek, Croatia (license plate) Osijek,克罗地亚(车牌)

OS Old Style (or Old System; referring to Julian Calendars) 旧的风格或旧的系统;指朱利安日历

OS Ordinary Seaman (Canadian naval rank) 普通海员(加拿大的海军等级)

OS Open Sockets (Diablo II gaming) 开插座(暗黑II游戏)

OS Overtime Scheduled 加班安排

OS Oblates of Wisdom Oblates智慧

OS Outlaw Star (action-anime) action-anime星(禁止)

OS Operserv (IRC Operator Server) Operserv IRC算子(服务)

os Ossetian (language identifier; RFC 3066) Ossetian语言标识符;自密实混凝土(1583)