Calendering of fabrics: a heated-roller finishing process creating gloss and smoothness, typically non permanent treatment. Calendering of fabrics is a mechanical finishing process using heated rollers to impart a flat, glossy, smooth surface, lustre, glaze, hardness, shine or embossed designs; a calender is a machine of at least three heated rollers used to produce such finishes, and the treatment is generally not permanent, as described in Encyclopedia Britannica and I.S. 2244 1972.