Critical technology

Technology or technologies essential to the design, development, production, operation, application, or maintenance of an article or service which makes or could make a significant contribution to the military potential of any country, including the United States. This includes, but is not limited to, design and manufacturing know-how, technical data, keystone equipment, and inspection and test equipment. (DoDI 2040.02, International Transfers of Technology, Articles, and Services 10 Jul 2008)

Source: Terms & Definitions of Interest for DoD Counterintelligence Professionals, Office of the National Counterintelligence,