Abbreviation

n.	1.	The act of shortening, or reducing.
	2.	The result of abbreviating; an abridgment.
	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.

Noun	1.	abbreviation - a shortened form of a word or phrase
	2.	abbreviation - shortening something by omitting parts of it

ABBREVIATION, practice. The omission of some words or letters in writing; as when fieri facias is written fi. fa.
     2. In writing contracts it is the better practice to make no abbreviations; but in recognizances, and many other contracts, they are used; as John Doe tent to prosecute, &c. Richard Roe tent to appear, &c. when the recognizances are used, they are drawn out in extenso. See 4 Ca. & P. 61; S.C.19E.C.L.R.268; 9 Co.48.

abbreviature, abrege, abstract, apocope, aposiopesis, astriction, astringency, blue-penciling, bottleneck, bowdlerization, brief, cancellation, capsule, censoring, censorship, cervix, circumscription, clipping, coarctation, compactedness, compaction, compend, compression, compressure, concentration, condensation, condensed version, consolidation, conspectus, constriction, constringency, contraction, contracture, crasis, curtailment, cutting, decrease, deletion, digest, diminuendo, draft, editing, elision, ellipsis, epitome, erasure, expurgation, foreshortening, head, hourglass, hourglass figure, isthmus, knitting, narrow place, narrowing, neck, omission, outline, overview, pandect, precis, pruning, puckering, pursing, recap, recapitulation, reduction, retrenchment, review, rubric, shortened version, shortening, skeleton, sketch, solidification, stranglement, strangulation, striction, stricture, striking, summary, summation, survey, syllabus, syncope, syneresis, synopsis, systole, telescoping, thumbnail sketch, topical outline, truncation, wasp waist, wrinkling