Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym COS is...

COS is

Class Of Service
Common Object Services
Central Operating System
Cost of Service

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

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