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1 definition found
 for extractive principle
From The Collaborative International Dictionary of English v.0.48 :

  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 substance that which gives it its essential and
        characteristic virtue; essence; as, extract of beef;
        extract of dandelion; also, any substance so extracted,
        and characteristic of that from which it is obtained; as,
        quinine is the most important extract of Peruvian bark.
        [1913 Webster]
     4. (Med.) A solid preparation obtained by evaporating a
        solution of a drug, etc., or the fresh juice of a plant;
        -- distinguished from an abstract. See Abstract, n., 4.
        [1913 Webster]
     5. (Old Chem.) A peculiar principle once erroneously supposed
        to form the basis of all vegetable extracts; -- called
        also the extractive principle. [Obs.]
        [1913 Webster]
     6. Extraction; descent. [Obs.] --South.
        [1913 Webster]
     7. (Scots Law) A draught or copy of writing; certified copy
        of the proceedings in an action and the judgement therein,
        with an order for execution. --Tomlins.
        [1913 Webster]
     Fluid extract (Med.), a concentrated liquid preparation,
        containing a definite proportion of the active principles
        of a medicinal substance. At present a fluid gram of
        extract should represent a gram of the crude drug.

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