title: GCR
text: # GCR
  
  GCR (or GCRS) may refer to:
  
  ## Science
  
  * Galactic cosmic ray, a cosmic ray from outside the Solar System
  * Geocentric Celestial Reference System, a coordinate system for near-Earth objects like satellites
  * Geological Conservation Review, a procedure of the British Joint Nature Conservation Committee
  * Global catastrophic risk, a potential catastrophe that would affect the whole world
  * Global Competitiveness Report, a yearly report published by the World Economic Forum
  * Glucocorticoid receptor, a cell protein which responds to glucocorticoid compounds
  
  ## Technology
  
  * Gas-cooled reactor, a type of nuclear reactor
  * Ghost-canceling reference, a television subsignal
  * Grey component replacement, substitution of black ink for gray ink in color printing
  * Group coded recording, a technique for encoding digital data on magnetic tape or disk
  
  ## Transportation
  
  * GCR, ICAO code for Tianjin Airlines, China
  * GCR, stock symbol for Gaylord Container Corporation, an American packing material manufacturer
  * Great Central Railway, a British railway company
     * Great Central Railway (heritage railway)
     * Great Central Railway (Nottingham)
  
  ## Other uses
  
  * Glass City Rollers, an American roller derby league
  * Graduate Common Room, a Common Room (university) for postgraduate students
  * Global Corruption Report by Transparency International
  * Gray City Rebels, a Brazilian roller derby league
  * Green Corn Revival, an American band
  * gcr, ISO 639-3 code for the French Guianese Creole language
  * Groupe Communiste Révolutionnaire (Revolutionary Communist Group (Lebanon)), a Lebanese Trotskyite group
  