English definition of Chemistry

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Definition of chemistry

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Chemistry (n.) 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, Molecul

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Literature :: Literature (n.) The collective body of literary productions, embracing the entire results of knowledge and fancy preserved in writing; also, the whole body of literary productions or writings upon a given subject, or in reference to a particular science or branch of knowledge, or of a given country or period; as, the literature of Biblical criticism; the literature of chemistry..

Thermochemical :: Thermochemical (a.) Of or pertaining to thermochemistry; obtained by, or employed in, thermochemistry..

Thermo- :: Thermo- () A combining form from Gr. qe`rmh heat, qermo`s hot, warm; as in thermochemistry, thermodynamic..

Thermochemistry :: Thermochemistry (n.) That branch of chemical science which includes the investigation of the various relations existing between chemical action and that manifestation of force termed heat, or the determination of the heat evolved by, or employed in, chemical actions..

Chemistry :: Chemistry (n.) An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo..

Phyto- :: Phyto- () A combining form from Gr. fyto`n a plant; as, phytochemistry, phytography..

Macro-chemistry :: Macro-chemistry (n.) The science which treats of the chemical properties, actions or relations of substances in quantity; -- distinguished from micro-chemistry..

Trial :: Trial (n.) Examination by a test; experiment, as in chemistry, metallurgy, etc..

Neo- :: Neo- () A prefix meaning new, recent, late; and in chemistry designating specifically that variety of metameric hydrocarbons which, when the name was applied, had been recently classified, and in which at least one carbon atom in connected directly with four other carbon atoms; -- contrasted with normal and iso-; as, neopentane; the neoparaffins. Also used adjectively..

Profession :: Profession (v.) That of which one professed knowledge; the occupation, if not mechanical, agricultural, or the like, to which one devotes one's self; the business which one professes to understand, and to follow for subsistence; calling; vocation; employment; as, the profession of arms; the profession of a clergyman, lawyer, or physician; the profession of lecturer on chemistry..

Zinco- :: Zinco- () A combining form from zinc; in chemistry, designating zinc as an element of certain double compounds. Also used adjectively..

Biochemistry :: Biochemistry (n.) The chemistry of living organisms; the chemistry of the processes incidental to, and characteristic of, life..

Nomenclature :: Nomenclature (n.) The technical names used in any particular branch of science or art, or by any school or individual; as, the nomenclature of botany or of chemistry; the nomenclature of Lavoisier and his associates..

Photochemistry :: Photochemistry (n.) The branch of chemistry which relates to the effect of light in producing chemical changes, as in photography..

Language :: Language (n.) The vocabulary and phraseology belonging to an art or department of knowledge; as, medical language; the language of chemistry or theology..

Homologue :: Homologue (n.) That which is homologous to something else; as, the corresponding sides, etc., of similar polygons are the homologues of each other; the members or terms of an homologous series in chemistry are the homologues of each other; one of the bones in the hand of man is the homologue of that in the paddle of a whale..

Neology :: Neology (n.) The introduction of a new word, or of words or significations, into a language; as, the present nomenclature of chemistry is a remarkable instance of neology..

Butter :: Butter (n.) Any substance resembling butter in degree of consistence, or other qualities, especially, in old chemistry, the chlorides, as butter of antimony, sesquichloride of antimony; also, certain concrete fat oils remaining nearly solid at ordinary temperatures, as butter of cacao, vegetable butter, shea butter..

Actino-chemistry :: Actino-chemistry (n.) Chemistry in its relations to actinism.

Zoochemy :: Zoochemy (n.) Animal chemistry; zoochemistry.