extract

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extract

1. a preparation containing the active principle or concentrated essence of a material
2. Pharmacol a solution of plant or animal tissue containing the active principle
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Extract

 

a concentrated medicinal substance obtained from raw materials that contain certain active ingredients, such as glycosides, alkaloids, and vitamins; a type of galenical. Depending on the extracting agent used, extracts may be categorized as, for example, aqueous, alcoholic, or ethereal. Depending on the degree of thickening after evaporation, they may be classified as liquid, semiliquid (no more than 25 percent moisture), or dry (up to 5 percent moisture).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

extract

[′ek‚strakt (noun) or ik′strakt (verb)]
(chemistry)
Material separated from liquid or solid mixture by a solvent.
(computer science)
To form a new computer word by extracting and putting together selected segments of given words.
To remove from a computer register or memory all items that meet a specified condition.
(metallurgy)
To separate a metal or a mineral from an ore by various chemical or mechanical methods.
(pharmacology)
A pharmaceutical preparation obtained by dissolving the active constituents of a drug with a suitable menstruum, evaporating the solvent, and adjusting to prescribed standards.
A preparation, usually in a concentrated form, obtained by treating plant or animal tissue with a solvent to remove desired odiferous, flavorful, or nutritive components of the tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

extract

To decompress. To restore the original files from a compressed archive (ZIP file, RAR file, etc.). See archive, data compression and archive formats.
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References in periodicals archive ?
The extract improved the quality of the shell and promoted the metabolizability of the ethereal extract similar to the antibiotic and MOS, being indicated as a phytogenic additive.
The contraction values of the wounds on the circular excision wound model for vehicle, negative control, the ethereal extracts and reference drug treated group are shown in Table 3.
Histopathological analysis showed that the ethereal extracts of Reboulia hemisphaerica, Plagiochasma rupestre and Targionia hypophylla treated groups demonstrated better healing with rapid re-epithelization.
The combined ethereal extracts were washed several times with distilled water till free of acidity, filtered over anhydrous sodium sulphate and then the filtrates were evaporated to dryness.