The meaning of the Acronym OS is...

OS is

• Original Special
• Offentlik Sak
• Organ Series
• Ophiological Services
• Old Sebilis
• Old Style
• Old Suisun
• Omnipotent Spirituality
• Operating Style
• Object Summary
• Outer Sen
• Operational Sponge
• Os Stands
• Other Source
• Ole Syversen
• Off Site
• Ozone Safe
• A Outside System
• Oculus Sinister
• Ownage Squad
• On Serotta
• A On Surveillance
• Orchard Street
• Occulus Sinister
• Oooh Shizzit
• Overly Short
• Online Service
• Open Space
• Omega Strain
• On Steroids
• Ostrich Source
• Orthopaedic Surgeon

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