The IOM Glossary on Migration is an accessible and extensive collection of definitions of migration-related terminology. It is designed for a broad range of actors engaging with migration at the international level. It also provides some insights on regional and national practices. The purpose of this Glossary is to develop a common understanding and consistent use of migration and migration-related terms based, whenever possible, on international standards. Creating uniformity in language is an important starting point in migration discussions to ensure an accurate understanding and coherent exchange of information among actors working in the field of migration. This updated version of the Glossary reflects recent developments in the use of migration-related terms, drawing definitions from a wide range of reliable sources or reflecting IOM’s understanding of migration-related concepts.