'CG' or 'Cg' may stand for:
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Airlines PNG IATA code
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Categorial grammar
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Center of gravity
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CG artwork, digitally made artwork, digital effects, or simply hand drawn art saved on a computer
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Cg (programming language), developed by NVIDIA
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Chappe et Gessalin, a French automobile maker
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Character generator, a broadcast graphic system
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Chaotic Good, an alignment in the role-playing game ''Dungeons & Dragons''
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CIGNA (CG), Connecticut General Life Insurance Company, formed in Hartford in 1865
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Clock Game, a game from ''The Price is Right''
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Coast guard
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Code Geass
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Community Games
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Complete game
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Computational geometry, the study of algorithms to solve problems stated in terms of geometry.
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Computer graphics
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Conceptual Graph
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Democratic Republic of the Congo, FIPS Pub 10-4 and obsolete NATO digram
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Configuration Guide, a document used to detail an environment when deploying software to ensure that all pre-requisites and dependencies are known
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Conjugate gradient method
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Corner Gas, A hit CTV comedy series
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Crna Gora (Montenegro)
★ Guided Missile
Cruiser (US Navy hull classification symbol)
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Republic of the Congo (ISO country code)
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Cypress Gardens
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Phosgene (Military designation)
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Chaos Grey, the band