資料來源 : Webster's Revised Unabridged Dictionary (1913)

Extract \Ex"tract`\, n.
   1. That which is extracted or drawn out.

   2. A portion of a book or document, separately transcribed; a
      citation; a quotation.

   3. A decoction, solution, or infusion made by drawing 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.

   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.

   5. (Old Chem.) A peculiar principle once erroneously supposed
      to form the basis of all vegetable extracts; -- called
      also the {extractive principle}. [Obs.]

   6. Extraction; descent. [Obs.] --South.

   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.

   {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.