Atomic Archive Glossary: http://www.atomicarchive.com/AAGlossary.shtml

Center for Nonproliferation Studies (Monterey Institute of International Studies) Glossary: http://cns.miis.edu/glossaries/terms.html

InfoManage International Nuclear Weapons Glossary: http://infomanage.com/nonproliferation/primer/nwg.html

Lawrence Berkeley Laboratory Nuclear Science Glossary: http://www.lbl.gov/abc/wallchart/glossary/glossary.html

Nuclear Regulatory Commission (U.S. Government) Glossary of Nuclear Terms: http://www.nrc.gov/NRC/EDUCATE/GLOSSARY/index.html