Meaning of ABBREVIATION in English
( n. )
The form to which a word or phrase is reduced by contraction and omission; a letter or letters, standing for a word or phrase of which they are a part; as, Gen. for Genesis; U.S.A. for United States of America.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012