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合金
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    Composition \Com`po*si"tion\, n. [F. composition, fr. L.
    compositio. See {Composite}.]
    1. The act or art of composing, or forming a whole or
    integral, by placing together and uniting different
    things, parts, or ingredients. In specific uses:
    (a) The invention or combination of the parts of any
    literary work or discourse, or of a work of art; as,
    the composition of a poem or a piece of music. ``The
    constant habit of elaborate composition.'' --Macaulay.
    (b) (Fine Arts) The art or practice of so combining the
    different parts of a work of art as to produce a
    harmonious whole; also, a work of art considered as
    such. See 4, below.
    (c) The act of writing for practice in a language, as
    English, Latin, German, etc.
    (d) (Print.) The setting up of type and arranging it for
    printing.

    2. The state of being put together or composed; conjunction;
    combination; adjustment.

    View them in composition with other things. --I.
    Watts.

    The elementary composition of bodies. --Whewell.

    3. A mass or body formed by combining two or more substances;
    as, a chemical composition.

    A composition that looks . . . like marble.
    --Addison.

    4. A literary, musical, or artistic production, especially
    one showing study and care in arrangement; -- often used
    of an elementary essay or translation done as an
    educational exercise.

    5. Consistency; accord; congruity. [Obs.]

    There is no composition in these news
    That gives them credit. --Shak.

    6. Mutual agreement to terms or conditions for the settlement
    of a difference or controversy; also, the terms or
    conditions of settlement; agreement.

    Thus we are agreed:
    I crave our composition may be written. --Shak.

    7. (Law) The adjustment of a debt, or avoidance of an
    obligation, by some form of compensation agreed on between
    the parties; also, the sum or amount of compensation
    agreed upon in the adjustment.

    Compositions for not taking the order of knighthood.
    --Hallam.

    Cleared by composition with their creditors.
    --Blackstone.

    8. Synthesis as opposed to analysis.

    The investigation of difficult things by the method
    of analysis ought ever to precede the method of
    composition. --Sir I.
    Newton.

    {Composition cloth}, a kind of cloth covered with a
    preparation making it waterproof.

    {Composition deed}, an agreement for composition between a
    debtor and several creditors.

    {Composition plane} (Crystallog.), the plane by which the two
    individuals of a twin crystal are united in their reserved
    positions.

    {Composition of forces} (Mech.), the finding of a single
    force (called the resultant) which shall be equal in
    effect to two or more given forces (called the components)
    when acting in given directions. --Herbert.

    {Composition metal}, an alloy resembling brass, which is
    sometimes used instead of copper for sheathing vessels; --
    also called {Muntz metal} and {yellow metal}.

    {Composition of proportion} (Math.), an arrangement of four
    proportionals so that the sum of the first and second is
    to the second as the sum of the third and fourth to the
    fourth.

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