blackening

black·en

B0297500 (blăk′ən)v. black·ened, black·en·ing, black·ens v.tr.1. To make black.2. To sully or defame: a scandal that blackened the mayor's name.3. To coat (fish or meat, for example) with pepper and other spices and then quickly sear in a very hot skillet, thereby producing meat that is black on the outside but tender on the inside.v.intr. To become dark or black: The day blackened into night.

black′en·er n.

Blackening

shoemakers collectively. See also bleche.

Thesaurus

Noun

blackening - changing to a darker color darkeningchange of color - an act that changes the light that something reflectsobfuscation - darkening or obscuring the sight of something

Translations

lucido da scarpe nerotinta nera

Blackening

a type of oxide coating for iron and steel products, used for corrosion protection and for decorative purposes. The most common method of blackening is to immerse the products in a concentrated alkaline solution containing sodium nitrate or sodium nitrite as an oxidizer. As the concentration of the alkali is increased (other conditions being equal), the thickness of the oxide film also increases. A thin coating (20 to 40 angstroms) does not alter the external appearance of the surface nor does it provide practical protection for the metal against corrosion. Thick coatings (2.5 micrometers), which are black or grayish black, have poor mechanical strength. The best thickness is 0.6 to 0.8 micrometer. Blackening is a special case of blueing.

blackening

black·en

Blackening

Blackening

Blackening

blackening

Synonyms for blackening

noun changing to a darker color

Synonyms

Related Words