The meaning of the Acronym COS is...

COS is

• Chamber Of Secrets
• Chief Of Station

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