MI definition

(1) The syllable naming the third (mediant) note of any major scale in solmization

(2) The government agency in the United Kingdom that is responsible for internal security and counterintelligence overseas

(3) The government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory

(4) A midwestern state in north central United States in the Great Lakes region

(5) A unit of length equal to 1760 yards

(6) A unit of length used in navigation; equivalent to the distance spanned by one minute of arc in latitude; 1,852 meters

(7) A British unit of length equivalent to 1,853.18 meters (6,082 feet)

(8) Destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle