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extract /ex·tract/ (eks´trakt) a concentrated preparation of a vegetable or animal drug.

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ex·tract (k-strkt)

v.

1. To draw or pull out, using force or effort.

2. To obtain from a substance by chemical or mechanical action, as by pressure, distillation, or evaporation.

3. To remove for separate consideration or publication; excerpt.

4. To determine or calculate the root of a number.

n. (kstrkt) Abbr. ext.

1. A concentrated preparation of a drug obtained by removing the active constituents of the drug with suitable solvents, evaporating all or nearly all of the solvent, and adjusting the residual mass or powder to the prescribed standard.

2. A preparation of the essential constituents of a food or a flavoring; a concentrate.

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ex·tracta·ble, ex·tracti·ble adj.

ex·tractor n.

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extract

Etymology: L, ex, out, trahere, to draw

1  [ek′strakt] n, a substance, usually a biologically active ingredient, prepared by the use of solvents or evaporation to separate the substance from the original material.

2 a concentrated form of an herb that is derived when the crude herb is mixed with water, alcohol, or another solvent and distilled or evaporated. Extracts may be either fluid or solid.

3  [ikstrakt′] v, to remove a tooth from the oral cavity by means of elevators or forceps or both. extraction, n.

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extract,

n liquid herbal concentrate obtained by processing crude herbs in alcohol, water, or other solvents.

extract, citrus seed,

n Latin name:
Citrus spp; part used: seeds; uses: antiseptic, antibacterial, antifungal, bowel flora conditions, antibacterial mouthwash; precautions: can cause dehydration (overuse). Also called
grapefruit seed extract and
GSE.

extract, fluid,

n in herbal medicine, a substance derived by mixing an herb with a solvent (usually a mixture of water and alcohol).

extract, grapefruit seed,

n Latin name:
Citrus paradisii; parts used: seeds, pulp; uses: disinfectant, diarrhea, flu, colds, gingivitis, dental plaques, candidiasis, ulcers, skin conditions; precautions: should be diluted, can cause skin irritation. Also called
GSE.

extract, grass pollen,

n a mixture of pollen extracts derived from rye (92%), timothy (5%), and corn (3%) plants; processed to remove any proteins that may trigger allergic reactions. Used to treat benign prostate inflammation and may also be useful in treating prostatitis, prostate cancer, and high cholesterol. Precautions for grass pollen extract include hyper-sensitivity or allergy.

extract, oyster,

n a dietary supplement made of oyster extract, taurine, ginseng, and zinc. Its use has been associated with the development of edema.

extract, thymus,

n a concentrate of bovine or porcine thymus gland. Used to treat asthma, food allergies, respiratory infections, thyroid deficiencies, and viral hepatitis. Precaution urged for patients taking immunosuppressant medications. Caution should be used with bovine glandular extracts because of virus or prior contamination. Also called
thymus gland, calf thymus extract, thymic extract, or
thymomodu-lin.

extracts, adrenal,

n.pl orally administered extracts of the adrenal gland used to enhance adrenal activity and aid the body's response to stress and fatigue.

extracts, liver,

n.pl orally administered extracts of liver tissue used to treat hepatic disease and enhance the functions of the liver, including the use of fat and tissue regeneration.

extracts, native,

n.pl in natural medicine, potent extracts that are concentrated by removing solvent under low pressure and temperature.

extracts, pancreatic,

n.pl orally administered extracts of the pancreas used to enhance the functions of the pancreas and to treat autoimmune diseases, cancer, cystic fibrosis, infections, and inflammatory diseases.

extracts, plant,

n.pl products, including absolutes, resinoids, concretes, hydrosols, pomades, and tinctures, that are derived from aromatic plant material by extraction processes such as distillation (steam or water), hydrodiffusion, expression, solvent extraction, carbon dioxide extraction, enfleurage or maceration.

extracts, spleen,

n.pl orally administered extracts of the spleen. Claimed to enhance the functions of the spleen, aid in white blood cell production, and treat infections and conditions connected to splenectomy.

extracts, standardized,

n herbal products in which a consistent level of the active chemical ingredient has been established.

extracts, thyroid,

n.pl preparations made from bovine and porcine thyroid glands available by prescription or over the counter; used to treat hypothyroidism.

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extract,

n a concentrate obtained by treating a crude material, such as plant or animal tissue, with a solvent, evaporating part or all of the solvent from the resulting solution, and standardizing the resulting product.

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extract

a concentrated preparation of a vegetable or animal drug.

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allergen extract

an extract usually containing protein of any substance (plant, food, insect, etc.) to which an animal may be allergic.

cell-free extract

the solution obtained by rupturing cells and removing all particulate matter.

crude extract

usually of cells when they are suspended in buffer and broken up and nothing is removed.

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extract

noun A concentrate of a drug, cells, or a supernatant. See Adrenal extract, Cell-free extract, Fluid extract, Green extract, Plasmid extract verb Psychology Obtain.