mottle

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mottle

[′mäd·əl]
(medicine)
An effect that occurs during radiological imaging when the dose of radiation is reduced to a level where quantum effects can be observed.

mottle

1. The pattern or arrangement of spots and cloudings forming a mottled surface, esp. in marble, or in wood veneer as a result of unusual variation in fiber growth or fiber arrangement. Also see fiddleback, quilted figure, blister figure. 2.See mottling.
References in periodicals archive ?
However, in their soils longer saturation was also correlated with the occurrence of mottles with brighter chromas and redder in colour, i.
In addition, to allow unbiased comparisons all B-horizons were assumed to have 2 colours of mottles.
1 Sew 3 rows using 4 green/blue mottle 1 1/2" squares, 4 orange stripe 7 1/2" strips, and 1 blue mottle 7 1/2" square (Diagram I).