CFR stands for the Code of Federal Regulations, which is a comprehensive collection of rules and regulations created by the executive departments and agencies of the United States federal government. It organizes these regulations into 50 titles, each covering a specific area of federal law, such as environmental protection, labor, and healthcare. The CFR is updated annually, with each title revised at different times throughout the year. It serves as an essential resource for understanding federal regulations and compliance requirements, making it easier for individuals, businesses, and legal professionals to navigate the complexities of federal law.