Definition (Source: Wikipedia)
***Dry cleaning is any cleaning process for clothing and textiles using an organic solvent rather than water ? generally known as dry cleaning fluid, and typically this is tetrachloroethylene (called perchloroethylene or perc in the industry). Dry cleaning is necessary for cleaning items which would otherwise be damaged by water and soap or detergent. It may also be sought if washing by hand ? another alternative for some delicate fabrics ? is seen as laborious.