– (p) Combat Search and Rescue ("seessar") CSC (i) Closed Spacelike Curve (relativity) Compact system camera Computer Sciences Corporation (became DXC Technology in 2017) Computer Security Centre CSCC Canadian Society of Clinical Chemists CSEAL – (i/a) Combat Systems Engineering and Analysis Laboratory ("see-seal") CSERIAC – (p) (U.S. DoD) Crew Systems Ergonomics Information Analysis Center CSG – (i) Corps Support Group CSI – see entry CSICOP – (i) Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006) CSIP – (i) Commercial Stable Image Platform (AMD) CSIS (p) Canadian Security Intelligence Service ("seessiss") (i) (U.S.) Center for Strategic & International Studies CSK – (s) Czechoslovakia (ISO 3166 trigram; obsolete since 1993) CSL – (i) U.K. Central Science Laboratory CSM – see entry C-SPAN – (i) Cable-Satellite Public Affairs Network CSPI – (i) Center for Science in the Public Interest CSR – (i) Control Supply Rate CSR – (i) Corporate Social Responsibility CSRC – (i) Conflict Studies Research Centre CSRF – (i) Cross-Site Request Forgery CSS (i) Cascading Style Sheets Catalina Sky Survey Central Security Service Combat Service Support Confederate States Ship Content-scrambling system Cross-site scripting CSSCS – (i) Combat Service Support Control System CST – (i) Central Standard Time (UTC−6 hours) CT CT – (i) Computed tomography (medical scan also known as a CAT scan) – Central Time zone – Chrono Trigger (Computer/Video games) – (s) Connecticut (postal symbol) – Canterbury (postal symbol) – Chhattisgarh (Indian state code) CTA (s) Central African Republic (FIFA trigram, but not ISO 3166 or IOC) (i) Chicago Transit Authority (i) Comando-Geral de Tecnologia Aerospacial (Portuguese, [Brazilian] "General Command for Aerospace Technology") CTBT – (i) Comprehensive [Nuclear] Test Ban Treaty CTC – (i) Closed Timelike Curve (relativity) – (U.S.) Combat Training Center CTDB – (i) Compact Terrain Data Base (file format) CTE (s) Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984) (i) Chronic traumatic encephalopathy CTGF – (i) connective tissue growth factor CTI – (i) Co-operative Target Identification CTIL – (i) Critical Tracked Items List CTIS – (i) Central Tire Inflation System CTMS – (i) Clinical Trial Management System CTO – (i) Chief Technical Officer – Chief Technology Officer CTS – (i) Clear-To-Send – Collective Training Standards – Communications Technology Service – Contract Technical Services – Conversation Time Sharing – COSMIC Top Secret CTSS – (i) Compatible Time-Sharing System CTU – (i) Counter Terrorist Unit (fictional branch