Introduction This Glossary contains the specialist acronyms@ terms and their definitions related to the work of the NATO Group on Ammunition Safety (AC/326). This work encompasses: - safety of energetic materials@ initiation systems and munition systems@ - ammunition transportation@ storage@ disposal and operational safety and - related topics concerning the work of AC/326@ but excludes nuclear@ biological and chemical weapons. This Glossary complements the NATO Glossary of Terms and Definitions@ AAP-6@ which lists terms and definitions of general application in NATO documents. The NATO terminology policy as laid down in AAP-6 and the guidance from the NATO Terminology Coordinator has been followed as much as possible. The terminology existing in internationally agreed glossaries@ in particular AAP-6 and further the AC/326 and other NATO publications has been applied as much as possible without any change. Nevertheless@ in some cases@ adaptation has been necessary to avoid contradictions and to comply with the terminology rules. Abbreviations@ terms and definitions included in this Glossary are not classified.