Moire, less often moiré, is a textile with a wavy (watered) appearance produced mainly from silk, but also wool, cotton and rayon. The watered appearance is usually created by the finishing technique called calendering. Moire effects are also achieved by certain weaves, such as varying the tension in the warp and weft of the weave. Silk treated in this way is sometimes called "watered silk".

In French, the adjective "moiré" derives from the earlier verb "moirer", "to produce a watered textile by weaving or pressing".

During the Middle Ages, moire was held in high esteem and was, as currently, used for women’s dresses, capes, and for facings, trimmings, etc. Originally moire was only made of silk taffeta; however, now cotton and synthetic fibers such as viscose (rayon) are also used. Moire has been worn throughout the late 19th century and early 20th century, and is still used for evening dresses and wedding gowns.

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