science and technology directorate
Science and Technology Directorate. The division of the Department of Homeland Security responsible for coordinating research and development, including preparing for and responding to terrorist threats involving weapons of mass destruction. • The Directorate also works with the Chemical, Biological, Radiological, and Nuclear Countermeasures Program and the Environmental Measurements Lab in the Department of Energy, the National BW (biological warfare) Defense Analysis Center in the Department of Defense, and the Plum Island Animal Disease Center. — Abbr. S & T.