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:

• Corporation for Open Systems
• Class Of Service
• Common Object Services
• Central Operating System
• Cost of Service
• Collaborative Operating System
• Computer Operating System
• Comet Operating System
• Corba Object Service
• Carousel Object Store
• Change of Subject
• Cosine
• Change Of State
• Community Of Science
• College Of Sciences

COS is also in:

• Chat
• General
• Mathematics
• Networking
• Physics
• Software
• Universities