%chem%

n. Chemistry in its relations to actinism. Draper. [ 1913 Webster ]

{ } a. [ Cf. F. alchimique. ] Of or relating to alchemy. [ 1913 Webster ]

adv. In the manner of alchemy. [ 1913 Webster ]

n. [ Cf. OF. alquemiste, F. alchimiste. ] One who practices alchemy. [ 1913 Webster ]

You are alchemist; make gold. Shak. [ 1913 Webster ]

{ } a. Relating to or practicing alchemy. [ 1913 Webster ]

Metaphysical and alchemistical legislators. Burke. [ 1913 Webster ]

n. Alchemy. [ Obs. ] [ 1913 Webster ]

v. t. To change by alchemy; to transmute. Lovelace. [ 1913 Webster ]

n. [ OF. alkemie, arquemie, F. alchimie, Ar. al-kīmīa, fr. late Gr. &unr_;, for &unr_;, a mingling, infusion, &unr_; juice, liquid, especially as extracted from plants, fr. &unr_; to pour; for chemistry was originally the art of extracting the juices from plants for medicinal purposes. Cf. Sp. alquimia, It. alchimia. Gr. &unr_; is prob. akin to L. fundere to pour, Goth. guitan, AS. geótan, to pour, and so to E. fuse. See Fuse, and cf. Chemistry. ] 1. 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. [ 1913 Webster ]

2. A mixed metal composed mainly of brass, formerly used for various utensils; hence, a trumpet. [ Obs. ] [ 1913 Webster ]

Put to their mouths the sounding alchemy. Milton. [ 1913 Webster ]

3. Miraculous power of transmuting something common into something precious. [ 1913 Webster ]

Kissing with golden face the meadows green,
Gilding pale streams with heavenly alchemy. Shak. [ 1913 Webster ]

a. Of supreme chemical powers. [ R. ] “The archchemic sun.” Milton. [ 1913 Webster ]

n. the branch of science involving astronomy and chemistry which studies the chemical composition, chemical reactions, and evolution of matter in outer space. -- as`tro*chem"ic*al a. -- as`tro*chem"ic*al*ly adv. [ PJC ]

adj. of or pertaining to biochemistry. [ WordNet 1.5 ]

n. a chemical substance produced by a living organism, or such a substance produced synthetically. [ WordNet 1.5 ]

n. [ Gr. bi`os life + E. chemistry. ] (Biol.) The chemistry of living organisms; the chemistry of the processes incidental to, and characteristic of, life. [ 1913 Webster ]

‖ ‖/mhw>, n. [ NL., fr. Gr. &unr_; bad + &unr_; blood. ] (Med.) A degenerated or poisoned condition of the blood. -- Ca*chæ"mic, Ca*che"mic a. [ Webster 1913 Suppl. ]

a. Chemical. Blackw. Mag. [ 1913 Webster ]

n. [ See Chenistry. ] 1. A chemist; an alchemist. [ Obs. ] [ 1913 Webster ]

2. (Bleaching) A solution of chloride of lime. [ 1913 Webster ]

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. [ 1913 Webster ]

Chemical attraction or
Chemical affinity. See under Attraction. [ 1913 Webster ]

n. A substance used for producing a chemical effect; a reagent. [ 1913 Webster ]

adv. According to chemical principles; by chemical process or operation. [ 1913 Webster ]

a. [ Chemical + &unr_; to engrave. ] Engraved by a voltaic battery. [ 1913 Webster ]

n. [ Chemical + -graphy. ] Any mechanical engraving process depending upon chemical action; specif., a process of zinc etching not employing photography. -- Chem`i*graph"ic a. [Webster 1913 Suppl.]

n. A garment for women, consisting of chemise and drawers united in one. [ U. S. ] [ 1913 Webster ]

{ n. Formerly also }. [ Chemical + Gr. &unr_; arrangement, fr. &unr_; to arrange. ] (Biol.) The sensitiveness exhibited by small free-swimming organisms, as bacteria, zoospores of algæ, etc., to chemical substances held in solution. They may be attracted (positive chemotaxis) or repelled (negative chemotaxis). -- Chem`o*tac"tic a. -- Chem`o*tac"tic*al*ly, adv. [ Webster 1913 Suppl. ]

n. [ F., shirt, fr. LL. camisa, camisia, shirt, thin dress; cf. G. hemd, or OIr. caimmse sort of garment. Cf. Camis. ] 1. A shift, or undergarment, worn by women. [ 1913 Webster ]

2. A wall that lines the face of a bank or earthwork. [ 1913 Webster ]

n. [ F., dim. of chemise. ] An under-garment, worn by women, usually covering the neck, shoulders, and breast. [ 1913 Webster ]

n. [ Cf. F. chimisme. See Chemistry. ] The force exerted between the atoms of elementary substance whereby they unite to form chemical compounds; chemical attraction; affinity; -- sometimes used as a general expression for chemical activity or relationship. [ 1913 Webster ]

n. [ Shortened from alchemist; cf. F. chimiste. ] A person versed in chemistry or given to chemical investigation; an analyst; a maker or seller of chemicals or drugs. [ 1913 Webster ]

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 ]

☞ 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 ]

☞ 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 ]

n. a retail shop where medicine and other articles are sold; a drugstore. [ British ]
Syn. -- drugstore, apothecary's shop, chemist's shop, dispensary, pharmacy. [ WordNet 1.5 ]

n. [ Chemical + -type. ] (Engraving) One of a number of processes by which an impression from an engraved plate is obtained in relief, to be used for printing on an ordinary printing press. [ 1913 Webster ]

n. [ Chemical + Gr. &unr_; a loosing. ] A term sometimes applied to the decomposition of organic substance into more simple bodies, by the use of chemical agents alone. Thudichum. [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_; a swelling of the cornea resembling a cockleshell, fr. &unr_; a gaping, hence a cockleshell. ] (Med.) Inflammatory swelling of the conjunctival tissue surrounding the cornea. -- Che*mot"ic a. [Webster 1913 Suppl.]

n. [ Chemical + osmosis. ] Chemical action taking place through an intervening membrane. [ 1913 Webster ]

a. Pertaining to, or produced by, chemosmosis. [ R. ] [ 1913 Webster ]

n. adsorption (especially when irreversible) by means of chemical instead of physical forces; as, chemosorption of gaseous nitrogen on iron catalysts.
Syn. -- chemisorption. [ WordNet 1.5 ]

adj. having the capacity to adsorb by chemical as contrasted with physical forces. [ WordNet 1.5 ]

n. [ Chemical + synthesis. ] (Plant Physiol.) Synthesis of organic compounds by energy derived from chemical changes or reactions. Chemosynthesis of carbohydrates occurs in the nitrite bacteria through the oxidation of ammonia to nitrous acid, and in the nitrate bacteria through the conversion of nitrous into nitric acid. -- Chem`o*syn*thet"ic a. [Webster 1913 Suppl.]

adj. of or pertaining to chemotherapy; using chemotherapy; having properties beneficial for chemotherapy. [ WordNet 1.5 ]

n. the use of chemical agents to treat or control disease (or mental illness); -- also used especially in reference to the use of chemicals to treat cancer. [ WordNet 1.5 +PJC ]

(Geol.) A subdivision in the upper part of the Devonian system in America, so named from the Chemung River, along which the rocks are well developed. It includes the Portage and Chemung groups or epochs. See the Diagram under Geology. [ 1913 Webster ]

a. Of or pertaining to electro-chemistry. Ure. [ 1913 Webster ]

n. That branch of science which treats of the relation of electricity to chemical changes. [ 1913 Webster ]

n. [ Gr. ge`a, gh^, the earth + chemistry. ] The study of the chemical composition of, and of actual or possible chemical changes in, the crust of the earth. -- Ge`o*chem"ic*al a. -- Ge`o*chem"ist n. [ Webster 1913 Suppl. ]

a. Of or pertaining to iatrochemistry, or to the iatrochemists. [ 1913 Webster ]

n. [ Gr. &unr_; physician + E. chemist. ] A physician who explained or treated diseases upon chemical principles; one who practiced iatrochemistry. [ 1913 Webster ]

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. [ 1913 Webster ]

n. [ Macro- + chemistry. ] (Chem.) The science which treats of the chemical properties, actions or relations of substances in quantity; -- distinguished from micro-chemistry. [ 1913 Webster ]

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. [ 1913 Webster ]