List of acronyms: C

(Main list of acronyms)

C0–9

C2 or C² – Command and Control
c2c – the British rail company formerly known as LTS Rail
C2C
* Coast to Coast Athletic Conference
* Consumer-To-Consumer electronic commerce
* Cam-To-Cam internet chat
C2D or C²D – Intel Core 2 Duo
C2IEDM or C²IEDM – Command and Control Information Exchange Data Model
C2IS or C²IS – Command and Control Information System
C2PC or C²PC – Command and Control Personal Computer
C2V or C²V – Command and Control Vehicle
C2W or C²W – Command and Control Warfare
C3 or C³
* Colorectal Cancer Condition
* Command, Control, and Communications
C3I or C³I – Command, Control, Communications, and Intelligence
C4 or C⁴ – Command, Control, Communications, and Computers
C4I or C⁴I – Command, Control, Communications, Computers, and Intelligence
C4ISR or C⁴ISR – Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance

CA

CB

CC

CC – many, including carbon copy; see entry
CCA – Counter Command Activity
CCC
* CCC - Coricidin Cough & Cold
CCC
* Canterbury Clothing Company
* Civilian Conservation Corps
* Corpus Christi College, Oxford
CCCAA – California Community College Athletic Association
CCCP
* Central Committee of the Communist Party
* Cyrillic for SSSR
CCD
* Charge-Coupled Device
* Confraternity of Christian Doctrine
CCF – Cartoon Cartoon Fridays
CCG
* Canadian Coast Guard
* Collectible Card Game
CCGC
* Canadian Coast Guard Cutter
* Canadian Coast Guard College
CCGH – Canadian Coast Guard Hovercraft
CCGS
* Canadian Coast Guard Ship
* Christ Church Grammar School
CCH – Computer-Controlled Hostile
CCIF – Comité consultatif international des communications téléphoniques à grande distance
CCII
* Command and Control Information Infrastructure
* Community Capital Investment Initiative
CCIR
* Comité consultatif international pour la radio
* commander's critical information requirement
CCIT – Comité consultatif international télégraphique
CCITT – Comité consultatif international téléphonique et télégraphique
CCK
* Cholecystokinin
* Cocos (Keeling) Islands
CCM
* Canada Cycle & Motor Co. Ltd.
* Contemporary Christian music
* Cape Cod Mall
CCOC
* Canadian Children's Opera Chorus
CCOP – Coalition Common Operating/Operational Picture
CCP
* Casualty Collection Point
* Communications Checkpoint
* Contingency Communications Package
CCPA – Consumer Credit Protection Act
CCR
* Covenants, conditions, and restrictions
* Creedence Clearwater Revival
CCRAp – Canadian Conservative Reform Alliance party
CCRP – Command and Control Research Program
CCRTS – Command and Control Research and Technology Symposium
CCSCS – Coordinadora de Centrales Sindicales del Cono Sur
CCSCS – Consultative Committee for Space Data Systems
CCSIL – Command and Control Simulation Interface Language
CCSK – Cyclic Code Shift Keying
CCT – Current Commitments Team
CCTT – Close Combat Tactical Trainer

CD

CE

CF

cf. – confer

CG

CH

CI

CJ

CK

CL

Cl – Chlorine
CL – Chile – Co-ordination Line – One Hundred and Fifty
CLA – Clutterers Anonymous
CLEC – Competitive Local Exchange Carrier
CLEMARS – California Law Enforcement Mutual Aid Radio System
CLI – Command Line Interface/Interpreter
CLIC – Compact LInear Collider
CLO – Cornell Lab of Ornithology
CLOB – Character Large OBject
CLOS – Command to Line-Of-Sight
CLOS – Common Lisp Object System
CLP – Chilean peso – Common Land Picture
CLPFC – CentroLateral PreFrontal Cortex
CLRP – College Loan Repayment Program

CM

CN

CO

c/o – care of
co – Corsican language
Co – Cobalt
Co. – Company
CO – many, including Central Office ; see entry – Colorado – Commanding Officer
COA – Certificate/Concept Of Analysis – Course Of Action
COB – Close Of Business
COBOL – COmmon Business-Oriented Language
COBRA – Consolidated Omnibus Budget Reconciliation Act of 1985
COCOM – Combatant Command
COD – Cash On Delivery – Democratic Republic of the Congo
CoDA – Co-Dependents Anonymous
codec – Coder-Decoder / Compressor-Decompressor / Compression-Decompression algorithm
COE – Cab Over Engine – Common Operating Environment
COEA – Cost Operational Effectiveness Analysis
COEIA – Combined Operational Effectiveness and Investment Appraisal
C of I – Certificate of Indebtedness – The College of Idaho
COFT – Conduct Of Fire Trainer
COG – Centre Of Gravity – Current Operations Group – Republic of the Congo
COGENT –
COIL – Chemical Oxygen Iodine Laser
COIN – Counter-Insurgency
COK – Cook Islands
COL
* Colombia
* Cost of Living
COLA – comp.os.linux.announce – Cost Of Living Adjustment
COLT – Combat Observation and Lasing Team
COM – Comoros – Component Object Model
COMECON – Council for Mutual Economic Assistance
COMLEX-USA – Comprehensive Osteopathic Medical Licensing Examination of the United States ; "COMLEX" typically pronounced as a single word, with "USA" spelled out
COMMZ – Communications Zone
COMSEC – Communications Security
CONAD – U.S. Continental Air Defense Command
CONCACAF – Confederation Of North, Central American and Caribbean Association Football
CONMEBOL – Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol
CONOPS – Concept of Operations
CONUS – Continental United States
COO – Chief Operating Officer
COP – Colombian peso – Common Operating/Operational Picture
COPD – Chronic obstructive pulmonary disease
COPE – U.K. Committee On Publication Ethics
COPUS – U.K. Committee on the Public Understanding of Science
cor – Cornish language
CORBA – Common Object Request Broker Architecture
CORD – Common Operational Requirements Document
CORE – Consortium for Oceanographic Research and Education
CORG – Combat Operations Research Group
COROT – COnvection, ROtation and planetary Transits
cos – Corsican language – Cosine
COS – Cooper Ornithological Society
COSCOM – Corps Support Command
COSER – COoperative SERvice
COSHH – Control Of Substances Hazardous to Health
CoSIDA – College Sports Information Directors of America, the original name of the organization now known as College Sports Communicators
CoT – Car of Tomorrow
COTS – Commercial Off The Shelf
COVID-19 – Coronavirus disease 2019
Coy – Company (military unit)Cow

CP

CQ

CR

CS

CT

CU

CV

CW

CX

CY

CZ