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3 definitions found
 for Organic chemistry
From The Collaborative International Dictionary of English v.0.48 :

  Organic \Or*gan"ic\ ([^o]r*g[a^]n"[i^]k), a. [L. organicus, Gr.
     'organiko`s: cf. F. organique.]
     1. (Biol.) Of or pertaining to an organ or its functions, or
        to objects composed of organs; consisting of organs, or
        containing them; as, the organic structure of animals and
        plants; exhibiting characters peculiar to living
        organisms; as, organic bodies, organic life, organic
        remains. Cf. Inorganic.
        [1913 Webster]
     2. Produced by the organs; as, organic pleasure. [R.]
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     3. Instrumental; acting as instruments of nature or of art to
        a certain destined function or end. [R.]
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              Those organic arts which enable men to discourse and
              write perspicuously.                  --Milton.
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     4. Forming a whole composed of organs. Hence: Of or
        pertaining to a system of organs; inherent in, or
        resulting from, a certain organization; as, an organic
        government; his love of truth was not inculcated, but
        [1913 Webster]
     5. (Chem.) Of or pertaining to compounds which are
        derivatives of hydrocarbons; pertaining to, or denoting,
        any one of a large series of carbon-containing compounds
        which are related to the carbon compounds produced by
        biological processes (such as methane, oils, fats, sugars,
        alcohols, ethers, proteins, etc.) and include many
        substances of artificial production which may or may not
        occur in animals or plants; -- contrasted with
     Note: Borderline cases exist which may be classified as
           either organic or inorganic, such as carbon
           terachloride (which may be viewed as a derivative of
           methane), but in general a compound must have a carbon
           with a hydrogen atom or another carbon atom attached to
           it to be viewed as truly organic, i.e. included in the
           subject matter of organic chemistry.
           [1913 Webster +PJC]
     Note: The principles of organic and inorganic chemistry are
           identical; but the enormous number and the completeness
           of related series of organic compounds, together with
           their remarkable facility of exchange and substitution,
           offer an illustration of chemical reaction and homology
           not to be paralleled in inorganic chemistry.
           [1913 Webster]
     Organic analysis (Chem.), the analysis of organic
        compounds, concerned chiefly with the determination of
        carbon as carbon dioxide, hydrogen as water, oxygen as the
        difference between the sum of the others and 100 per cent,
        and nitrogen as free nitrogen, ammonia, or nitric oxide;
        -- formerly called ultimate analysis, in distinction from
        proximate analysis.
     Organic chemistry. See under Chemistry.
     Organic compounds. (Chem.) Chemical substances which are
        organic[5]. See Carbon compounds, under Carbon.
     Organic description of a curve (Geom.), the description of
        a curve on a plane by means of instruments. --Brande & C.
     Organic disease (Med.), a disease attended with morbid
        changes in the structure of the organs of the body or in
        the composition of its fluids; -- opposed to functional
     Organic electricity. See under Electricity.
     Organic law or Organic laws, a law or system of laws, or
        declaration of principles fundamental to the existence and
        organization of a political or other association; a
     Organic stricture (Med.), a contraction of one of the
        natural passages of the body produced by structural
        changes in its walls, as distinguished from a spasmodic
        stricture, which is due to muscular contraction.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Chemistry \Chem"is*try\ (k[e^]m"[i^]s*tr[y^]; 277), n. [From
     Chemist. See Alchemy.]
     1. That branch of science which treats of the composition of
        substances, and of the changes which they undergo in
        consequence of alterations in the constitution of the
        molecules, which depend upon variations of the number,
        kind, or mode of arrangement, of the constituent atoms.
        These atoms are not assumed to be indivisible, but merely
        the finest grade of subdivision hitherto attained.
        Chemistry deals with the changes in the composition and
        constitution of molecules. See Atom, Molecule.
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     Note: Historically, chemistry is an outgrowth of alchemy (or
           alchemistry), with which it was anciently identified.
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     2. An application of chemical theory and method to the
        consideration of some particular subject; as, the
        chemistry of iron; the chemistry of indigo.
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     3. A treatise on chemistry.
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     Note: This word and its derivatives were formerly written
           with y, and sometimes with i, instead of e, in the
           first syllable, chymistry, chymist, chymical, etc., or
           chimistry, chimist, chimical, etc.; and the
           pronunciation was conformed to the orthography.
           [1913 Webster]
     Inorganic chemistry, that which treats of inorganic or
        mineral substances.
     Organic chemistry, that which treats of the substances
        which form the structure of organized beings and their
        products, whether animal or vegetable; -- called also
        chemistry of the carbon compounds. There is no
        fundamental difference between organic and inorganic
     Physiological chemistry, the chemistry of the organs and
        tissues of the body, and of the various physiological
        processes incident to life.
     Practical chemistry, or Applied chemistry, that which
        treats of the modes of manufacturing the products of
        chemistry that are useful in the arts, of their
        applications to economical purposes, and of the conditions
        essential to their best use.
     Pure chemistry, the consideration of the facts and theories
        of chemistry in their purely scientific relations, without
        necessary reference to their practical applications or
        mere utility.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  organic chemistry
      n 1: the chemistry of compounds containing carbon (originally
           defined as the chemistry of substances produced by living
           organisms but now extended to substances synthesized

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