- The branch of science that deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules.
- (as a modifier) Relating to or using chemistry.
a chemistry lesson
- An application of chemical theory and method to a particular substance.
the chemistry of iron; the chemistry of indigo
- A treatise on chemistry.
- (informal) the mutual attraction between two people; rapport
- The Nuttall Encyclopedia
Chem"is*try (k&ebreve;m"&ibreve;s*tr&ybreve;; 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
&fist; Historically, chemistry is an outgrowth of alchemy (or
alchemistry), with which it was anciently identified.
2. An application of chemical theory and
method to the consideration of some particular subject; as, the
chemistry of iron; the chemistry of
3. A treatise on chemistry.
&fist; 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
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
- Webster's Unabridged Dictionary (1913)
Chemistry, the science that treats of elementary bodies and their
combinations: inorganic, relating to physical compounds; organic,
relating to vegetable and animal compounds.
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