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What is COP? COP is an international climate meeting held each year by the United Nations. COP is short for “Conference of the Parties ,” meaning those countries who joined—are “party to,” in legal terms—the international treaty called the U.N. Framework Convention on Climate Change (UNFCCC). What does COP abbreviation stand for? Explore the list of 729 best COP meaning forms based on popularity. Most common COP abbreviation full forms updated in July 2025. COP Full Form in English COP stands for “Constable on Patrol,” which refers to a police officer who is assigned to patrol duty in order to maintain law and order within a specific area. The Conference of the Parties ( COP ) to the UN Framework Convention on Climate Change (UNFCCC) is an international climate summit, which is held annually unless the Parties (the countries involved) decide otherwise. At COPs, world leaders gather to work together on solutions to tackle climate change. There are now 198 Parties (197 countries plus the European Union) to the Convention, constituting near universal membership.