The meaning of the Acronym COS is...

COS is

• Critical Operational Specialties
• Corps Support
• Communications Segment (within CARS)
• Corporation for Open Systems
• Champions Of The Sea
• Chief Of Staff
• Company Orderly Sergeant
• Covert Organization Search

More Meanings For COS:

• Cosine
• Change Of State
• Community Of Science
• College Of Sciences
• Coordination Of Supply
• Chief Of Security
• Counselors Only Section
• Certificate Of Occupancy
• Company Of Song
• Corporation Of Seniors
• Church Of Scientology
• Church Of Satan
• Christ Our Savior
• Christian Outreach Service
• Chamber Of Secrets

COS is also in:

• Educational
• General
• Housing
• Mathematics
• Music
• Non-Profit Organizations
• Physics
• Positions
• Religion
• Sports
• Universities