extract

extract
1. (ek′strakt)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. (ek-strakt′)To remove part of a mixture with a solvent. 3. To perform extraction. [L. ex-traho, pp. -tractus, to draw out]
- alcoholic e. a solid e. obtained by extracting the alcohol-soluble principles of a drug, followed by the evaporation of the alcohol.
- allergenic e. e. (usually containing protein) from various sources, e.g., food, bacteria, pollen, and the like, suspected of specific action in stimulating manifestations of allergy; may be used for skin testing or desensitization. SYN: allergic e..
- allergic e. SYN: allergenic e..
- belladonna e. a powdered e. from the leaves and/or roots of Atropa belladonna; used to formulate various pharmaceutical dosage forms. Contains the alkaloids of belladonna (atropine and scopolamine) and has been used in the treatment of ulcers, diarrhea, and parkinsonism.
- Büchner e. a cell-free e. of yeast, such as was prepared by Eduard and Hans Büchner and observed to catalyze alcoholic fermentation; this observation essentially eliminated “vitalism” as being responsible for biologic chemical reactions and initiated the beginnings of modern biochemistry (enzymology).
- equivalent e. a fluidextract of the same strength, weight for weight, as the original drug. SYN: valoid.
- hydroalcoholic e. a solid e. obtained by extracting the soluble principles of the drug with alcohol and water, followed by evaporation of the solution.
- liquid e. SYN: fluidextract.
- pollen e. liquid obtained by extracting the protein from the pollen of plants used for diagnostic testing or treatment.

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ex·tract ik-'strakt vt
1) to pull or take out forcibly <\extracted a wisdom tooth>
2) to withdraw (as the medicinally active components of a plant or animal tissue) by physical or chemical process also to treat with a solvent so as to remove a soluble substance
ex·tract·abil·i·ty ik-.strak-tə-'bil-ət-ē, (.)ek- n, pl -ties
ex·tract·able also ex·tract·ible ik-'strak-tə-bəl, 'ek-. adj
ex·tract 'ek-.strakt n something prepared by extracting esp a medicinally active pharmaceutical solution

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n.
a preparation containing the pharmacologically active principles of a drug, made by evaporating a solution of the drug in water, alcohol, or ether.

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ex·tract (ekґstrakt) [L. extractum] 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 dry or powdered.

Medical dictionary. 2011.

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Synonyms:
, , , , , , , / (by chemical process), / (from a literary work), , / (a root)


Look at other dictionaries:

  • extract — [ek strakt′, ikstrakt′; ] for n. [ eks′trakt΄] vt. [ME extracten < L extractus, pp. of extrahere, to draw out < ex , out + trahere, to DRAW] 1. to draw out by effort; pull out [to extract a tooth, to extract a promise from someone] 2. to… …   English World dictionary

  • Extract — Ex tract , n. 1. That which is extracted or drawn out. [1913 Webster] 2. A portion of a book or document, separately transcribed; a citation; a quotation. [1913 Webster] 3. A decoction, solution, or infusion made by dissolving out from any… …   The Collaborative International Dictionary of English

  • extract — EXTRÁCT, extracte, s.n. 1. (Ieşit din uz) Copie a unui act, scoasă dintr un registru (de stare civilă). 2. Substanţă sau amestec de substanţe chimice preparat prin concentrarea până la un anumit grad a produselor extrase din diferite materii… …   Dicționar Român

  • Extract — Ex*tract , v. t. [imp. & p. p. {Extracted}; p. pr. & vb. n. {Extracting}.] [L. extractus, p. p. of extrahere to extract; ex out + trahere to draw. See {Trace}, and cf. {Estreat}.] 1. To draw out or forth; to pull out; to remove forcibly from a… …   The Collaborative International Dictionary of English

  • Extract — Données clés Titre québécois Essence Titre original Extract Réalisation Mike Judge Scénario Mike Judge Acteurs principaux Jason Bateman …   Wikipédia en Français

  • extract — vb extort, elicit, *educe, evoke Analogous words: draw, *pull, drag: *demand, require, exact: obtain, procure, gain, win, acquire, *get extract n Extract, excerpt denote a passage transcribed or quoted from a book or document …   New Dictionary of Synonyms

  • Extract — Extract, beinahe gleichbedeutend mit Essenz (s. d.) ist der Auszug irgend eines gewürzhaften oder andern Pflanzenstoffes. Er unterscheidet sich von letzterer nur dadurch, daß diese immer weinig oder geistig ist, während der Extract auch mit… …   Damen Conversations Lexikon

  • extract — [n] something condensed from whole abstract, citation, clipping, concentrate, cutting, decoction, distillate, distillation, elicitation, essence, excerpt, infusion, juice*, passage, quotation, selection; concepts 270,835 Ant. insertion extract… …   New thesaurus

  • extract — ex·tract / ek ˌstrakt/ n: a certified copy of a document that forms part of or is preserved in a public record Merriam Webster’s Dictionary of Law. Merriam Webster. 1996. extract …   Law dictionary

  • Extract — (v. lat. Extractum), 1) Auszug; 2) Gemisch verschiedener Körper, welches bei der Behandlung bes. von Pflanzen u. Thierstoffen mit indifferenten, flüchtigen Lösungsmitteln u. durch vollständiges od. theilweises Verdunsten des Lösungsmittels[46]… …   Pierer's Universal-Lexikon

  • Extract — Extract, lat., Auszug, in der Pharmacie Pflanzensäfte, die durch Abdampfen eingedickt sind …   Herders Conversations-Lexikon

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