so as to make shorter; as an abbreviation or nickname簡略之;簡稱
The American Broadcasting Company is called ABC for short. 美國廣播公司簡稱ABC。
The United States of America is called USA for short, or USA is the short for the United States of America. 美利堅合眾國的簡稱是USA,或者說USA是美利堅合眾國的縮寫。