Moiré (redirected from Moira)

moiré [mȯ′rā]

(communications)

In television, the spurious pattern in the reproduced picture resulting from interference beats between two sets of periodic structures in the image.

(graphic arts)

Undesirable patterns that occur when a halftone is made from a previously printed halftone or steel engraving; they are caused by the conflict between the dot arrangement produced by the halftone screen and the dots or lines of the original halftone or engraving; careful rotation of the halftone screen by the photographer or engraver may minimize moiré.

(textiles)

A fabric finish in which the warp has yarn of harder twist than the filling, with a surface pattern resembling water ripples that is produced by engraved rollers, heat, pressure, steam, and chemicals.

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Moiré 

(1) A dense silk or semisilk patterned fabric of various hues; it is iridescent in the light. Moiré is used to make dresses, trimmings, and ribbons.

(2) Paper with a pattern stamped on the surface.

(3) Alternating dark and light stripes in an impression that result from the incorrect preparation of a halftone plate.