| slovo | definícia |  
Ethereal medium (gcide) | 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.
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                 The just medium . . . lies between pride and
                 abjection.                        --L'Estrange.
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       (b) (Math.) See Mean.
       (c) (Logic) The mean or middle term of a syllogism; that
           by which the extremes are brought into connection.
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    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.
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             Whether any other liquors, being made mediums, cause
             a diversity of sound from water, it may be tried.
                                                   --Bacon.
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             I must bring together
             All these extremes; and must remove all mediums.
                                                   --Denham.
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    3. An average. [R.]
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             A medium of six years of war, and six years of
             peace.                                --Burke.
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    4. A trade name for printing and writing paper of certain
       sizes. See Paper.
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    5. (Paint.) The liquid vehicle with which dry colors are
       ground and prepared for application.
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    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.
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