(noun) Uneven print density or uneven color A defect in matrix color printing because of a lack of dot placement accuracy or variable dot density Most readily apparent in the areas of solid printing
a leaf symptom in which small but numerous areas of discolouration, commonly chlorotic irregularly shaped and without sharply defined boundaries, stand out against a background of different tint, the pattern being unrelated to the vein network; cf blotch, mosaic Irregular, diffuse patterns of chlorotic areas interspersed with normal green leaf tissue An irregular pattern of light and dark areas
Something that is mottled is covered with patches of different colours which do not form a regular pattern. mottled green and yellow leaves. covered with spots or coloured areas mottled with (mottle (17-21 centuries), probably from motley)
Spots or blotches of different color or shades of color interspersed within the dominant color in a soil layer, usually resulting from the presence of periodic reducing soil conditions
A texturing seen in the smooth or monotone areas of an image This can be due to faulty processing and a number of improperly used digital processes e g excessive unsharp masking