cos

from WordNet (r) 3.0 (2006)

cos
    n 1: ratio of the adjacent side to the hypotenuse of a right-
         angled triangle [syn: {cosine}, {cos}]
    2: lettuce with long dark-green leaves in a loosely packed
       elongated head [syn: {cos}, {cos lettuce}, {romaine},
       {romaine lettuce}]

from The Free On-line Dictionary of Computing (8 July 2008)

COS

   1. {Cray Operating System}.

   2. {Corporation for Open Systems}.

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Concurrent Operating System (OS, UNIVAC 9200, UNIVAC 9300)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Corporation for Open Systems (org., OSI, user group)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Cray Operating System (OS, Cray)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Card Operating System (OS, ICC)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Cassette Operating System (OS)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Class of Service

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Clip On Socket (CPU)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

COS
       Commercial Operating System (OS, DEC, PDP 11)