The IAEA Nuclear Safety and Security Glossary, 2022 (Interim) Edition, defines and explains technical terms used in IAEA safety standards and nuclear security guidance and other safety and security related IAEA publications, and provides information on their usage. It includes terms and definitions that have been established in IAEA safety standards and nuclear security guidance issued and approved up to 2022. The primary purpose of the publication is to promote consistency of terminology and usage. The glossary provides guidance for drafters and reviewers of safety standards, nuclear security guidance and other publications and is a source of information for users of these publications.