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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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..

Stereochrome :: Stereo-chemistry (n.) Chemistry considered with reference to the space relations of atoms.

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

Alchemistry :: Alchemistry (n.) Alchemy.

Practical :: Practical (a.) Capable of being turned to use or account; useful, in distinction from ideal or theoretical; as, practical chemistry..

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

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

Phytochemistry :: Phytochemistry (n.) Chemistry in its relation to vegetable bodies; vegetable chemistry.

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

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..

Chemist :: Chemist (n.) A person versed in chemistry or given to chemical investigation; an analyst; a maker or seller of chemicals or drugs.

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..

Aqua :: Aqua (n.) Water; -- a word much used in pharmacy and the old chemistry, in various signification, determined by the word or words annexed..

Phytochemical :: Phytochemical (a.) Relating to phytochemistry.

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.

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

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

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

Phytochimy :: Phytochimy (n.) Phytochemistry.