The meaning of the Acronym OS is...

OS is

• Operating Strength
• Operating System
• Opportunity to Serve
• On Station
• Ordnance Survey
• On Sea
• Other Specifications
• Old Skool
• Overtly Similar
• On Service
• Outer Sensor
• Operations Specialist

More Meanings For OS:

• Orzya Sativa
• Osmium
• Osmium
• Operating System
• Outstanding Student
• Overseas Studies
• On Sheet
• OmniSky
• Overhead Spending
• Operating Standards
• Organizational Software
• Oregon Steel Mills, Inc.
• Other Singer
• Out Sized
• Open Street

OS is also in:

• Accounting
• Botany
• Chemistry
• Electronics
• Firms
• General
• NYSE Symbols
• Positions
• Stock Exchange
• Universities