Practical 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:

  • practical chemistry — applied chemistry, use of chemistry for practical purposes …   English contemporary dictionary

  • 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… …   The Collaborative International Dictionary of English

  • chemistry of the carbon compounds — 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 …   The Collaborative International Dictionary of English

  • Practical — Prac ti*cal, a. [L. practicus active, Gr. ? fit for doing or performing, practical, active, fr. ? to do, work, effect: cf. F. pratique, formerly also practique. Cf. {Pragmatic}, {Practice}.] 1. Of or pertaining to practice or action. [1913… …   The Collaborative International Dictionary of English

  • Practical joke — Practical Prac ti*cal, a. [L. practicus active, Gr. ? fit for doing or performing, practical, active, fr. ? to do, work, effect: cf. F. pratique, formerly also practique. Cf. {Pragmatic}, {Practice}.] 1. Of or pertaining to practice or action.… …   The Collaborative International Dictionary of English

  • chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …   Universalium

  • practical — prac|ti|cal1 W2S3 [ˈpræktıkəl] adj ▬▬▬▬▬▬▬ 1¦(real)¦ 2¦(effective)¦ 3¦(clear thinking)¦ 4¦(suitable)¦ 5¦(using your hands)¦ 6 for/to all practical purposes 7 practical certainty/disaster/sell out etc ▬▬▬▬▬▬▬ [Date: 1500 1600; : Late Latin; Origin …   Dictionary of contemporary English

  • Practical engineer — A Practical Engineer is a professional degree awarded by technological colleges in Israel and validated by the National Institute for Technological Training of the Ministry of Industry, Trade Labor (State of Israel). [… …   Wikipedia

  • chemistry — 1. (chemistry) (1159↑, 315↓) A school subject that teaches the alert young anarchist how to make primative explosive devices. One of the few useful things I learnt at school was how to make nitro based explosives. Author: black flag… …   Urban English dictionary

  • practical — 1 adjective 1 CONCERNED WITH REAL SITUATIONS concerned with real situations and events rather than ideas: How much practical experience do you have of working with computers? | a practical knowledge of simple medicine | Most of the things you… …   Longman dictionary of contemporary English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”