The US Department of Defense Defense Technical Information Center provides this handy dictionary, derived from Joint Publication 1-02, "DOD Dictionary of Military and Associated Terms." Users can browse the dictionary alphabetically or search it. Definitions are terse but clear. Cross references are provided but, unfortunately, not hyperlinked at this time. The dictionary also contains both terms and acronyms & abbreviations. The latter two can be browsed or searched separately from a link on the dictionary page.