What is "gcr"

GCR may refer to:

• Galactic cosmic ray, the high-energy particles that flow into the Solar System from far away in the galaxy
• Gas cooled reactor, a nuclear reactor type
• Gateshead Community Radio, a former recurring RSL that broadcast to Gateshead in the 1990s.
• General Chinese Romanization, a cross-dialectal spelling system devised by Chao Yuen Ren
• Generalized conjugate residual, a generalization of the Conjugate residual method
• Geological Conservation Review
• Ghost-canceling reference, a special television signal that helps reduce the effects of multipath ("ghosting")
• Global catastrophic risk
• Global Competitiveness Report
• Glucocorticoid receptor, a ligand-activated transcription factor that binds with high affinity to cortisol and other glucocorticoids
• Graduate Common Room, a term for a postgraduate student organisation, sometimes used in collegiate universities in place of the more common MCR
• Grand Central Railway, an open-access United Kingdom railway company
• Gray City Rebels, a roller derby league in São Paulo
• Great Central Railway, a railway company and former main line in the United Kingdom
• Great Central Railway (preserved), the preserved railway running on part of the old main line
• Grey component replacement, a topic in desktop publishing
• Ground Coverage Ratio, the ratio of land coverage (use in solar panel industry)
• Group Code Recording, a set of encoding methods for magnetic media (floppy disks, etc.)
• Groupe Communiste Révolutionnaire, the French name for the Lebanese Revolutionary Communist Group
• Guildford Campus Radio, the former name of student radio station GU2