From the George Washington University website here
"Space Policy Institute and Secure World Foundation Release 'A Guide to Space Law Terms'
January 31, 2013
The Space Policy Institute and the Secure World Foundation have released a guide to words, terms, and phrases commonly used in space law. Edited by SPI Professor Henry Hertzfeld, this accurate and usable guide is an important initial step to clarifying the language used in space law for the benefit of students and professionals alike. All readers are invited to comment and suggest both
corrections and revisions to these definitions as well as additional words, terms and phrases to be included in future editions."