silver iodide

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silver iodide

A pale yellow, odorless powder, AgI, that darkens on exposure to light and is used in photographic emulsions, rainmaking, and medicine, especially as an antiseptic.


1. a chemical element, atomic number 47, atomic weight 107.870, symbol Ag. See Table 6. It is used in medicine for its caustic, astringent and antiseptic effects. Experimental poisoning with silver salts causes myopathy.
2. a coat color in dogs, foxes.

silver amalgam
see amalgam.
silver collie syndrome
see canine cyclic hematopoiesis.
silver grass
silver halide
any of the silver salts with halogens including bromine, chlorine, iodine used in photographic emulsion.
silver iodide
soluble silver salt used in cloud seeding but presents no toxicological risk to local grazing cattle.
silver-leaf ironbark
silver-leafed nightshade
silver nitrate
colorless or white crystals, used as a caustic and local anti-infective.
silver nitrate (toughened)
a mixture of silver nitrate with hydrochloric acid, sodium chloride or potassium nitrate, occurring as white crystalline masses molded into pencils or cones, called caustic pencils; a convenient means of applying silver nitrate locally. Called also lunar caustic.
silver protein
silver made colloidal by the presence of, or combination with, protein; an active germicide with a local irritant and astringent effect.
silver stain
a method of demonstrating flagella on bacteria, or for visualizing very thin bacteria, such as leptospires.
silver sulfadiazine
the silver salt of sulfadiazine, having bactericidal activity against many gram-positive and gram-negative organisms, as well as being effective against yeasts; used as a topical anti-infective for the prevention and treatment of wound sepsis in patients with second and third degree burns.
silver weed
References in periodicals archive ?
Total quantity or scope: One (1) Hail Suppression System with Air Media, forty thousand (40,000) rounds of Silver Iodide in packs of 20 grams and four hundred (400) rounds of Silver Iodide in packs of 75 grams, seven hundred and sixty (760) radiosondes, seven hundred and sixty (760 ) sounding ballons, seven hundred and sixty (760) parachutes sounding, under No.
In cloud seeding, an airplane drops silver iodide crystals, which act as ice nuclei, into clouds.
In 1990, South Africa dispensed with dry ice and silver iodide and switched to hygroscopic salts.
The scientists soon took to the sky, demonstrating that dry ice, and silver iodide, had the potential to increase snowfall and rain.
Silver iodide and dry ice are thought to mimic natural ice crystals in clouds short on frozen particles.
He views the hygroscopic flares as complementary to silver iodide, with one or the other effective in different situations.
Scientists first suggested this idea in 1947 after observing that smoke containing silver iodide, a chemical with an ice-like crystal structure, caused ice formation in clouds.
Moreover, in cloud-seeding experiments, an ionic salt such as silver iodide generally produces such aggregates much more readily than dry ice.
Skeptics have never doubted that when silver iodide seeding agents come into contact with a cloud's very cold moisture droplets, ice crystals -- which become raindrops in warm weather -- are formed; in laboratory cloud chambers this is known to happen.
The researchers released a tracer gas -- sulfur hexafluoride -- simultaneously with the silver iodide, and then followed in a second plane equipped with detection equipment to monitor the tracer's dispersal.
The researchers also tested silver iodide with sodium chloride.
It is a process typically used to help create precipitation by injecting silver iodides into cloud formations.