Property and Casualty (P&C) insurance actuarial work involves complex terminology and methodologies that are essential for proper risk assessment, pricing, and reserving. This comprehensive guide provides detailed explanations of the most important terms and concepts used by actuaries in the P&C insurance industry.

Understanding these definitions is crucial for actuarial professionals, insurance executives, and anyone involved in the P&C insurance value chain. The terminology covered here forms the foundation for actuarial analysis, including loss reserving, ratemaking, and financial reporting.