Ab‐bre′vi‐a″tion (�), n. [LL. abbreviatio: cf. F. abbréviation.] 1. The act of shortening, or reducing.
2. The result of abbreviating; an abridgment. Tylor.
3. 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.
4. (Mus.) One dash, or more, through the stem of a note, dividing it respectively into quavers, semiquavers, or demi-semiquavers. Moore.