War on TerrorismˌWar on ˈTerrorism (also ˌWar on ˈTerror) noun [singular] 
the name given to the actions and other measures taken by the US, Britain, and other countries to destroy international terrorist groups, especially al-Qaeda after the attacks on the World Trade Center and the Pentagon on September 11th, 2001. The actions taken include the wars in Afghanistan and Iraq.
the name given to the actions and other measures taken by the US, Britain, and other countries to destroy international terrorist groups, especially al-Qaeda after the attacks on the World Trade Center and the Pentagon on September 11th, 2001. The actions taken include the wars in Afghanistan and Iraq.