The Pilot/Controller Glossary (P/CG) is a publication issued by the Federal Aviation Administration (FAA) that defines terms and phrases used by pilots and air traffic controllers to ensure clear and consistent communication. It provides standardized terminology to facilitate effective communication between flight crews and air traffic control personnel, promoting safety and efficiency in aviation operations. The glossary covers a wide range of topics, including aircraft operations, weather, navigation, and emergency procedures, and is regularly updated to reflect changes in regulations, technology, and best practices.