zinc oxide (redirected from philosopher's wool)

zinc (zingk) a chemical element, at. no. 30, symbol Zn; it is an essential micronutrient present in many enzymes, but is toxic on excessive exposure, as by ingestion or inhalation (e.g., metal fume fever ).

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zinc acetate  an astringent and styptic.

zinc chloride  a salt used as a nutritional supplement in total parenteral nutrition and applied topically as an astringent and a desensitizer for dentin.

zinc oxide  a topical astringent and protectant; also a sunscreen.

zinc sulfate  a topical astringent for mucous membranes, especially those of the eye.

zinc undecylenate  the zinc salt of undecylenic acid; it is a topical antifungal.

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zinc oxide

n.

An amorphous white or yellowish powder used as a pigment and in pharmaceuticals and cosmetics.

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zinc (Zn) (zingk),

n a bluish-white chemical element used in medicine in the form of various salts and as a component in some silver amalgams.

zinc oxide,

n a zinc compound used as a topical protectant; prescribed for a wide range of minor skin irritations.

zinc oxide and eugenol

n two substances that react chemically to form a relatively hard mass. When modified by certain additives, the material is used for impression pastes, root canal fillings, surgical dressings, temporary filling materials, and cementing media.

zinc oxide-eugenol cement,

See cement, dental, zinc oxide-eugenol.

zinc oxyphosphate

n See cements.

zinc phosphate cement

n See cement, zinc phosphate.

zinc polycarbonate cement

n See cements.

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zinc

a chemical element, atomic number 30, atomic weight 65.37, symbol Zn. See Table 6.

Zinc is a trace element that is a component of several enzymes, including DNA and RNA polymerases, and carbonic anhydrase. Zinc salts are used in skin lotions, eye washes, the treatment and prevention of footrot of sheep and facial eczema of sheep and cattle.

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zinc acetate

a salt used as an astringent and styptic.

zinc cadmium sulfide

used in the preparation of fluoroscopic screens; is fluorescent and emits yellow-green light when excited by x-rays.

zinc carbonate

a mild astringent; used mainly as calamine.

zinc chromate

an industrial compound used in cold galvanizing of metal. Accidental access causes diarrhea and fatal enteritis.

zinc finger motif

sequence of approximately 30 amino acids, forming a helix-turn-helix, believed to form a structure that includes tetrahedrally coordinated zinc (II) ions. Found in many eukaryotic, prokaryotic and viral DNA-binding proteins.

zinc finger protein

DNA-binding proteins that contain zinc-finger motifs.

zinc gelatin

a mixture of zinc oxide, gelatin, glycerin and purified water; used topically as a protectant.

zinc gluconate

a source of supplementary zinc.

hereditary zinc deficiency

lethal trait A46; see inherited parakeratosis.

zinc nutritional deficiency

causes parakeratosis in pigs, a chronic, afebrile, noninflammatory disease of the epidermis characterized by crusty proliferation and cracking of the skin. Dogs fed diets with high levels of calcium or cereals may have poor absorption of zinc and develop signs of deficiency, primarily in the skin. See also zinc-responsive dermatosis.

zinc ointment

a preparation of zinc oxide and mineral oil in white ointment; used topically as an astringent and protectant.

zinc oversupplementation

causes hemolytic anemia, anorexia and vomiting.

zinc oxide

a compound used as a topical astringent and protectant. Inhalation of fumes causes interstitial emphysema and atelectasis.

zinc phosphate

used as a phosphate-bonded cement in restorative dentistry.

zinc phosphide

used at one time as a rodenticide. When ingested the poisonous gas phosphine is liberated and kills the animal without diagnostic signs or lesions.

zinc poisoning

is usually chronic and causes stiffness and lameness with particular involvement of the shoulder joint in which there is a degenerative arthritis. In acute poisoning there is gastroenteritis with vomiting.

zinc-responsive dermatoses

see parakeratosis, zinc-responsive dermatosis.

zinc stearate

a compound of zinc with stearic and palmitic acids; used as a water-repellent protective powder in dermatoses.

zinc sulfate

a compound used as an ophthalmic astringent, in skin lotions (see white lotion), for sheep footrot, and the treatment of facial eczema. It is the common form of zinc for oral supplementation and treatment of zinc-responsive diseases.

zinc sulfate flotation test

used to demonstrate nematode eggs, protozoan cysts, and larvae in feces and bronchial secretions.

zinc sulfate turbidity test

1. serum globulins are precipitated by zinc sulfate. The test is used for the semiquantitative assessment of the immunological status of foals and calves when there is a question of whether they have suckled to receive immunoglubulins.

2. an outdated liver function test.

zinc undecylenate

a compound used topically in 20% ointment as an antifungal agent. See also undecylenic acid.

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zinc oxide

Toxicology A compound used in welding which, in excess, may cause zinc intoxication Uses Topically, astringent, calamine lotion. See Zinc.