Organic chemistry
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}. [1913 Webster]

Note: Historically, chemistry is an outgrowth of alchemy (or alchemistry), with which it was anciently identified. [1913 Webster]

2. An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo. [1913 Webster]

3. A treatise on chemistry. [1913 Webster]

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 chemistry.

{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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Organic chemistry — Organic Or*gan ic, a. [L. organicus, Gr. ?: 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;… …   The Collaborative International Dictionary of English

  • Organic chemistry — Structure of the methane molecule: the simplest hydrocarbon compound. Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by… …   Wikipedia

  • organic\ chemistry — 1. (organic chemistry) (364↑, 34↓) A discipline of chemistry which involved the study of the structure, reactions, compounds, et. al. of organisms and other organic compounds that contain carbon. Often refered to simply as organic or o chem.… …   Urban English dictionary

  • organic chemistry — noun the chemistry of compounds containing carbon (originally defined as the chemistry of substances produced by living organisms but now extended to substances synthesized artificially) • Topics: ↑chemistry, ↑chemical science, ↑organism, ↑being… …   Useful english dictionary

  • organic chemistry — organinė chemija statusas T sritis chemija apibrėžtis Chemija, tirianti anglies junginius. atitikmenys: angl. organic chemistry rus. органическая химия …   Chemijos terminų aiškinamasis žodynas

  • organic chemistry — noun The chemistry of carbon containing compounds, especially those that occur naturally in living organisms. See Also: biochemistry, inorganic chemistry …   Wiktionary

  • organic chemistry — 1. the branch of chemistry that deals with hydrocarbons and their derivatives. 2. originally, the branch of chemistry dealing with substances derived from living organisms …   Medical dictionary

  • organic chemistry — or.ganic chemistry n [U] the study of substances containing ↑carbon →↑inorganic chemistry …   Dictionary of contemporary English

  • organic chemistry — or,ganic chemistry noun uncount the scientific study of chemical COMPOUNDS based on CARBON ─ compare INORGANIC CHEMISTRY …   Usage of the words and phrases in modern English

  • organic chemistry —    The study of the carbon atom and the compounds it forms, mainly with the 20 lightest elements, especially hydrogen, oxygen and nitrogen. Some 3 million organic compounds have been identified and named …   Forensic science glossary

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