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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Chemical :: Chemical (a.) Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations..

Zoochemical :: Zoochemical (a.) Pertaining to zoochemistry.

Chymistry :: Chymistry () See Chemic, Chemist, Chemistry..

Xantho- :: Xantho- () A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.

Iatrochemistry :: Iatrochemistry (n.) Chemistry applied to, or used in, medicine; -- used especially with reference to the doctrines in the school of physicians in Flanders, in the 17th century, who held that health depends upon the proper chemical relations of the fluids of the body, and who endeavored to explain the conditions of health or disease by chemical principles..

Superchery :: Superchemical (a.) Above or beyond chemistry; inexplicable by chemical laws.

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..

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

Terminology :: Terminology (n.) The terms actually used in any business, art, science, or the like; nomenclature; technical terms; as, the terminology of chemistry..

Zoochemistry :: Zoochemistry (n.) Animal chemistry; particularly, the description of the chemical compounds entering into the composition of the animal body, in distinction from biochemistry..

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

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

Iatrochemical :: Iatrochemical (a.) Of or pertaining to iatrochemistry, or to the iatrochemists..

Mechanico-chemical :: Mechanico-chemical (a.) Pertaining to, connected with, or dependent upon, both mechanics and chemistry; -- said especially of those sciences which treat of such phenomena as seem to depend on the laws both of mechanics and chemistry, as electricity and magnetism..

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

Physiological :: Physiological (a.) Of or pertaining to physiology; relating to the science of the functions of living organism; as, physiological botany or chemistry..

Alchemy :: Alchemy (n.) An imaginary art which aimed to transmute the baser metals into gold, to find the panacea, or universal remedy for diseases, etc. It led the way to modern chemistry..

-ate :: -ate () In chemistry it is used to denote the salts formed from those acids whose names end -ic (excepting binary or halogen acids); as, sulphate from sulphuric acid, nitrate from nitric acid, etc. It is also used in the case of certain basic salts..

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..

Science :: Science (n.) Any branch or department of systematized knowledge considered as a distinct field of investigation or object of study; as, the science of astronomy, of chemistry, or of mind..