Abbreviation

noun

1. The act or product of shortening.
2. A shortened form of a word or phrase used chiefly in writing to represent the complete form, such as Mass. for Massachusetts or USMC for United States Marine Corps.
3. ;
4. The act of abbreviating, shortening, or contracting; the state of being abbreviated; abridgment.
5. A shortened or contracted form; a part used for the whole.