What does COS stand for?

Calcium Oxalate Stone - Medicine (MELL)

Calculator on Substrate (IAA)

Call Originate Status - Telecommunications (HGAA)

Canadian Oncology Society

Canadian Ophthalmological Society (DAVI)

Canadian Otolaryngological Society (PDAA)

Carbon Oxysulfide

Carbonyl Sulphide (PDAA)

Card Operating System (IAA)

Card Oriented System (SAUS)

Carry-On Oxygen System (MCD)

Carry-Over Storage (SAUS)

Cash-on-Shipment

Cassette-Operated System (MSA)

Cassette Operating System (NITA)

Center for Ocean Sciences - University of New Hampshire (RCD)

Centralized Operating System (IAA)

Central Office of Statistics - Malta (GEOI)

Central Office Switch (SAUS)

Central Opera Service (EA)

Central Operations System (PDAA)

Central Orchid Society - British (DBA)

Certificate of Office Studies - Academic degree (AIE)

Chamber of Shipping (DAS)

Change of Status (ACAE)

Change of Subject (TONE)

Change of Subscribers (TEL)

Changeover Switch (NATG)

Character Organized Store (SAUS)

Charity Organization Society - British

Checkout Station (ACAE)

Cheiro-Oral Syndrome - Medicine (EDAA)

Chief of Section

Chief of Staff - Medicine (DAVI)

Chief of Staff - Military

Chief of State

Chief of Station - CIA country team

Cinema Organ Society - British

Civilian Occupational Specialty

Class of Subscriber (SAUS)

Clinically Observed Seizure - Medicine (STED)

Clinical Orthopedic Society (EA)

Clip on Socket - Computer science (VERA)

College of the Sea (SAUO)

Colorado Spg-Peterson Field (SAUO)

Colorado Springs - Colorado - Airport symbol (OAG)

Colorado Springs, CO - Location identifier - FAA (FAAL)

Combat Operations Section (SAUO)

Commanding Officer of Ship (SAUS)

Commercial Office of Spain (EA)

Commercial Operating System (IAA)

Commissary of Subsistence (SAUO)

Committee on Shock - Medicine (EDAA)

Committee on Standards (SAUO)

Communication Operating System (SAUS)

Communication Operation Station

Communications Oriented Software

Communications Segment - Military technology (DDF)

Community of Science, Inc.

Compact Operating System (IAA)

Companies (ROG)

Company Organization Survey - Bureau of the Census (GFGA)

Compatibility Operating System - Computer science

Compatible Operating System (HOME)

Complementary Switching (IAA)

Complementary Symmetrically (SAUS)

Complementary Symmetry (IAA)

Complete Operational System (MCD)

Conceptual Operational System

Concors Latvian Air Service - FAA designator (FAAC)

Concurrent Operating System - Sperry UNIVAC - Computer science (IEEE)

Condemned or Suppressed

Conditions of Service - Engineering

Connection-Mode Service

Conservative Opportunity Society (EA)

Console Operating System (NASA)

Constabler - NCIC firearms make code (NCIC)

Constant Optimum Separation Lane - Aviation (DA)

Consul - Latin (OCD)

Consumer Operating System (VLIE)

Contactor, Starting

Contaminated Oil Settling (PDAA)

Cooperation for Open Systems

Cooper Ornithological Society (EA)

Co-Orbiting Satellite (ACAE)

Coos - Language code (ETLW)

Copperwald Steel Co. (SAUO)

Copperweld Corp. - NASDAQ symbol

Core Operating System - Computer science (NITA)

Corona Oxide Semiconductor (SAUS)

Corporation for Open Systems - Telecommunications (EA)

Cosiguina - Nicaragua - Seismograph station code, US Geological Survey (SEIS)

Cosine - Mathematics (MCD)

Cosmic rays and trapped radiation committee (SAUO)

Cost Accounting System (SAUS)

Cost of Sales (TIMI)

Council of States - An association

Counseling-Orientation Preference Scale (EDAC)

Countermine Operational Simulation - Military (SEWL)

Counties (SAUO)

Crack Opening Stress (SAUS)

Cray Operating System - Computer science

Critical Occupational Specialty - Military

Critical Operational Specialty - Military technology (DDF)

Crypto Operating System (SAUS)

Current Output Station (VLIE)

Custom Boatland, Medford, OR - Manufacturer code for watercraft hull identification number (USCG)

Customer's Other Service - Telecommunications (TEL)

Cutoff Signal (KSC)

University of Southern Colorado, Pueblo, CO - OCLC symbol (OCLC)

Change of Shift (STED)

Consul (ADWA)

Cosine (VLIE)

Cosine (MIST)

Cosmic (SAUS)

Cosmology (SAUS)