Many of the nuclear safety and security issues the United States and China seek to address are highly technical and discussion of these issues is often limited due to the lack of understanding of the associated terms across languages. However, communicating effectively requires more than just translating nuclear security terms; it requires a more profound understanding of how terms are used by each country and of the assumptions surrounding these terms.An ad hoc U.S. committee appointed by the NRC Chair will undertake a joint project with a committee appointed by the Chinese Scientists Group for Arms Control (CSGAC) at the Institute for Applied Physics and Computation Mathematics to construct and publish a Chinese-English English-Chinese glossary of nuclear security terms as a means of examining the definitions and use of these terms across languages and cultures. The project will focus on the following tasks:-Develop a list of approximately 1,000 terms to be included in the glossary and the subset of approximately 100 terms that will be defined;-Reach consensus on the terms to be translated and the translations of the definitions;-Assemble the glossary for review and publication;-Conduct an external review of the glossary prior to publication; -Publish the print version and online version of the glossary and conduct outreach activities; -Hold follow-on discussions and assess the success of the project as needed.CISAC and CSGAC intend to publish an online electronic version of the glossary in addition to a limited number of print copies. There will be follow-on activities to discuss shared meaning and usage of key terms in current U.S. and Chinese policy practice and a review of the glossary one year following its publication to assess the project's impact and to identify any terms that might be modified or added in a future edition based on developments in the fields covered by the glossary.This 18-month project will include two joint meetings of the NRC and CSGAC committees to discuss the glossary of nuclear security terms and one meeting in the United State to finalize the glossary for publication.This project is sponsored by the Dept of Energy, National Nuclear Security Administration The approximate start date is June 2007.The project will publish an English-Chinese print version of the glossary as well as an online version.