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2 definitions found
 for Circulating medium
From The Collaborative International Dictionary of English v.0.48 :

  Medium \Me"di*um\, n.; pl. L. Media, E. Mediums. [L.
     medium the middle, fr. medius middle. See Mid, and cf.
     Medius.]
     1. That which lies in the middle, or between other things;
        intervening body or quantity. Hence, specifically:
        (a) Middle place or degree; mean.
            [1913 Webster]
  
                  The just medium . . . lies between pride and
                  abjection.                        --L'Estrange.
            [1913 Webster]
        (b) (Math.) See Mean.
        (c) (Logic) The mean or middle term of a syllogism; that
            by which the extremes are brought into connection.
            [1913 Webster]
  
     2. A substance through which an effect is transmitted from
        one thing to another; as, air is the common medium of
        sound. Hence: The condition upon which any event or action
        occurs; necessary means of motion or action; that through
        or by which anything is accomplished, conveyed, or carried
        on; specifically, in animal magnetism, spiritualism, etc.,
        a person through whom the action of another being is said
        to be manifested and transmitted.
        [1913 Webster]
  
              Whether any other liquors, being made mediums, cause
              a diversity of sound from water, it may be tried.
                                                    --Bacon.
        [1913 Webster]
  
              I must bring together
              All these extremes; and must remove all mediums.
                                                    --Denham.
        [1913 Webster]
  
     3. An average. [R.]
        [1913 Webster]
  
              A medium of six years of war, and six years of
              peace.                                --Burke.
        [1913 Webster]
  
     4. A trade name for printing and writing paper of certain
        sizes. See Paper.
        [1913 Webster]
  
     5. (Paint.) The liquid vehicle with which dry colors are
        ground and prepared for application.
        [1913 Webster]
  
     6. (Microbiology) A source of nutrients in which a
        microorganism is placed to permit its growth, cause it to
        produce substances, or observe its activity under defined
        conditions; also called culture medium or growth
        medium. The medium is usually a solution of nutrients in
        water, or a similar solution solidified with gelatin or
        agar.
        [PJC]
  
     7. A means of transmission of news, advertising, or other
        messages from an information source to the public, also
        called a news medium, such as a newspaper or radio; used
        mostly in the plural form, i. e. news media or media.
        See 1st media[2].
        [PJC]
  
     Circulating medium, a current medium of exchange, whether
        coin, bank notes, or government notes.
  
     Ethereal medium (Physics), the ether.
  
     Medium of exchange, that which is used for effecting an
        exchange of commodities -- money or current
        representatives of money.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Circulate \Cir"cu*late\, v. i. [imp. & p. p. Circulated; p.
     pr. & vb. n. Circulating.] [L. circulatus, p. p. of
     circulare, v. t., to surround, make round, circulari, v. i.,
     to gather into a circle. See Circle.]
     [1913 Webster]
     1. To move in a circle or circuitously; to move round and
        return to the same point; as, the blood circulates in the
        body. --Boyle.
        [1913 Webster]
  
     2. To pass from place to place, from person to person, or
        from hand to hand; to be diffused; as, money circulates; a
        story circulates.
        [1913 Webster]
  
     Circulating decimal. See Decimal.
  
     Circulating library, a library whose books are loaned to
        the public, usually at certain fixed rates.
  
     Circulating medium. See Medium.
        [1913 Webster]

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