| hydroalcoholic extract | A solid extract obtained by extracting the soluble principles of the drug with alcohol and water, followed by evaporation of the solution. (05 Mar 2000) |
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| equivalent extract | A fluidextract of the same strength, weight for weight, as the original drug. Synonym: valoid. (05 Mar 2000) |
| extract | <pharmacology> A concentrated preparation of a vegetable or animal drug obtained by removing the active constituents therefrom with a suitable menstruum, evaporating all or nearly all the solvent and adjusting the residual mass or powder to a prescribed standard. Extracts are prepared in three forms, semiliquid or of syrupy consistency, pilular or solid and as dry powder. Origin: L. Extractum (18 Nov 1997) |
| yeast extract agar | A medium used to induce sporulation and reduce vegetative growth in the cultivation of fungi. (05 Mar 2000) |
| liquid extract | Pharmacopeial liquid preparation of vegetable drugs, made by percolation, containing alcohol as a solvent or as a preservative, or both, and so made that each milliliter contains the therapeutic constituents of 1 g of the standard drug that it represents. Synonym: liquid extract. (05 Mar 2000) |
| angostura bark | An aromatic bark used as a tonic, obtained from a South American of the rue family (Galipea cusparia, or officinalis). Origin: From Angostura, in Venezuela. Source: Websters Dictionary (01 Mar 1998) |
| bark | The outermost covering of trees and some plants. This is composed of the cuticle or epidermis, the outer bark (cortex), and the inner bark or fibre. (09 Oct 1997) |
| bark beetle | <zoology> A small beetle of many species (family Scolytidae), which in the larval state bores under or in the bark of trees, often doing great damage. Source: Websters Dictionary (01 Mar 1998) |
| bark louse | <zoology> An insect of the family Coccidae, which infests the bark of trees and vines. The wingless females assume the shape of scales. The bark louse of vine is Pulvinaria innumerabilis; that of the pear is Lecanium pyri. See Orange scale. Source: Websters Dictionary (01 Mar 1998) |
| bayberry bark | <botany> A widely dispersed genus of shrubs and trees, usually with aromatic foliage. It includes the bayberry or wax myrtle, the sweet gale, and the North American sweet fern, so called. Origin: L, fr. Gr. Tamarisk. Source: Websters Dictionary (01 Mar 1998) |
| maple bark disease | <radiology> Type of extrinsic allergic alveolitis, source: moldy maple bark in saw mills, organism: Cryptostroma corticale (12 Dec 1998) |
| cassia bark | Cinnamomum zeylanicum, an evergreen tree of the laurel family (lauraceae), and its dried inner bark used as a spice or medicinally. (12 Dec 1998) |
| Peruvian bark | A genus of rubiaceous south american trees that yields the toxic cinchona alkaloids from their bark; quinine, quinidine, chinconine, cinchonidine and others are used to treat malaria and cardiac arrhythmias. (12 Dec 1998) |
| cinchona bark | A genus of rubiaceous south american trees that yields the toxic cinchona alkaloids from their bark; quinine, quinidine, chinconine, cinchonidine and others are used to treat malaria and cardiac arrhythmias. (12 Dec 1998) |
| winter's bark | <botany> The aromatic bark of tree (Drimys, or Drymis, Winteri) of the Magnolia family, which is found in Southern Chili. It was first used as a cure for scurvy by its discoverer, Captain John Winter, vice admiral to sir Francis Drake, in 1577. Source: Websters Dictionary (01 Mar 1998) |