President Johnson n 1: 36th President of the United States; was elected vice president and succeeded Kennedy when Kennedy was assassinated (1908-1973) [syn: {Johnson}, {Lyndon Johnson}, {Lyndon Baines Johnson}, {LBJ}, {President Johnson}, {President Lyndon Johnson}] 2: 17th President of the United States; was elected vice president and succeeded Lincoln when Lincoln was assassinated; was impeached but acquitted by one vote (1808-1875) [syn: {Johnson}, {Andrew Johnson}, {President Johnson}, {President Andrew Johnson}]