mordant

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mordant

 [mor´dant]
1. a substance capable of intensifying or deepening the reaction of a specimen to a stain.
2. to subject to the action of a mordant before staining.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

mor·dant

(mōr'dant),
1. A substance capable of combining with a dye and the material to be dyed, thereby increasing the affinity or binding of the dye; for example, alum, a mordant commonly used to promote staining with hematoxylin.
2. To treat with a mordant.
[L. mordeo, to bite]
Farlex Partner Medical Dictionary © Farlex 2012

mordant

adjective Referring to an astringent chemical; caustic, corrosive.

noun A chemical used to set stains in tissue.

Mordants
Sodium chloride, tannic acid, alum, urine, chrome alum; Bouin’s solution can also be used as a mordant.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

mor·dant

(mōr'dănt)
1. A substance capable of combining with a dye and the material to be dyed, thereby increasing the affinity or binding of the dye.
2. To treat with a mordant.
[L. mordeo, to bite]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Vinegar can be used as both a mordant and a modifier.
Dyeing is such a beautiful way to see nature and chemistry in action--the difference the nature of fibers makes; the difference a bit of metal mordant makes; the way some dyes strike enthusiastically but others need overnight soaking.
The washed cotton fabric was treated with chemical mordant i.e.
It can be observed that directly dyed sample and those premordanted with natural mordants exhibit good to excellent rubbing and perspiration fastness and good to very good light fastness.
After fermentation madder roots and mordant are added to the suspension at ambient conditions.
For obtaining shades with acceptable light, wash and rubbing fastness, cotton fabrics can be padded with low concentration of mordant and natural dyes [5].
Myrobalan is also used for dyeing; its yellow colour is due to the tannins but also to flavonoid colorants (mostly 3'-methoxy quercetin and 3',4'-dimethoxy quercetin), (6) and its hydrolysable tannins combine with iron mordant to give black.
Enzymatic Natural Dyeing of Cotton and Silk Fabrics Without Metal Mordants, Journal of Cleaner Production, 15: 1441-1450.
Fluka)) were mixed as a concentrated solution with the addition of mordant (3% and 5%) to give a final stain concentration of 30 g [L.sup.-1] and 50 g [L.sup.-1] mordant (Guzel and Akgerman 2000).
Black Walnut--Black walnut is high in tannin which acts as a natural mordant. Use fresh black walnut hulls for best results.