mottle

(redirected from mottles)
Also found in: Dictionary, Thesaurus, Financial, Encyclopedia.

mottle

 [mot´'l]
a disturbance in a recorded radiographic image.
grid mottle in radiology, a widening of grid lines when the grid is in motion.
quantum mottle variations in optical density on a radiograph.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

mot·tle

(mot'tĕl),
Fine inhomogeneity of an area of generally uniform opacity on a photograph or radiograph; noise.
[fr. motley, fr. M.E. mot, speck]
Farlex Partner Medical Dictionary © Farlex 2012

mot·tle

(mot'tĕl)
Fine inhomogeneity of an area of generally uniform opacity on a photograph or radiograph; noise.
[fr. motley, fr. M.E. mot, speck]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The dark cutans in the top of the B-horizon show little if any sign of discolouration, and there are no strong brown mottles in the upper part of the B-horizon.
Rather, ponding of infiltrating rainwater most likely occurred on the top of the unaltered part of the old mottled zone where platy structure is still coarse, and above which there had been at least a partial change in non-matrix soil colours: from black to reddish brown in the cutans, and from red to reddish yellow or strong brown in the mottles. On one type of plinthite soil at Gatum, `plinthic on crest', the colour change had progressed well into the B-horizon, to between 0.6 and 1.0 m depth (G-0, 1, and 2).
Mottle colour varies greatly, both within and between soil profiles (Fig.
First of all we note that the size of the mottles, deemed important by Mokma and Cremeens (1991), may be less important in situations as at Gatum.
It involves only the hue and value and chroma of the soil matrix, and ignores mottles and cutans or clay films.
Furthermore, there are present in the E horizons of G-3 and G-4 few, fine, distinct, strong brown mottles; in profile G-7, where the E-horizon consists of similar material and is saturated almost as long, such mottles have all been leached out.